Turning 40 is one of those birthdays that feels bigger than just cake, candles, and a cute Instagram caption. It’s not simply about aging another year or watching the number change, it’s about entering a new chapter that often comes with deeper self-awareness, shifting priorities, and a stronger desire to build a life that actually feels good.
For many women, your late 30s become a time of assessment. You start looking at your health differently. You think about your relationships with more clarity. Your finances and future plans suddenly feel more urgent. And your personal goals? They either start to feel more exciting… or more overdue.
That’s why preparing for 40 doesn’t just mean planning a fabulous party or choosing the perfect outfit for your 40th birthday photoshoot. It means future-proofing your health, finances, relationships, and sense of purpose so you can step into this decade feeling empowered, not overwhelmed.
Because 40 is a turning point. It’s a moment where you can either drift into the next season of life on autopilot… or choose to be intentional.
So if you’re wondering what you should do before you turn 40, this guide is for you. Below, I’m sharing the ultimate roadmap to help you prepare for turning 40 in a way that supports your body, your lifestyle, and your long-term happiness.
How to Prepare for Turning 40
Preparation matters more than most people realize. The choices you make in your late 30s can determine how you feel physically, emotionally, and financially well into your 40s and beyond.
Around age 40, many women begin to notice changes such as:
- A slower metabolism
- Gradual muscle loss
- Increased risk of chronic disease
- Hormonal shifts and mood changes – perimenopause
- More financial responsibilities (children, aging parents, home ownership, retirement planning)
And while that might sound intimidating, it’s actually empowering—because it means you have time to prepare.
The habits you establish now can help prevent or delay many of the challenges that people often associate with aging. Your future self is shaped by what you consistently do today, and turning 40 is the perfect motivation to start building a foundation for longevity.
Instead of waiting for your body to “force” change through fatigue, weight gain, or burnout, preparing now allows you to enter this decade with strength, confidence, and control.
Why Is 40 A Birthday Milestone
There’s something about a 40th birthday that triggers deeper reflection than most other birthdays.
It’s a milestone that often comes with identity shifts. Many people begin reassessing their life goals, questioning what they truly want, and redefining what success means. Turning 40 can bring clarity, but it can also bring emotional weight—especially if you feel like you’ve been living for everyone else.
Unlike earlier birthdays, 40 is often seen as a “halfway point” marker. It forces you to take inventory of your health, relationships, career path, and personal fulfillment. It’s not about regret—it’s about awakening.
For many women, it’s also the moment when they finally give themselves permission to prioritize their needs. That’s why turning 40 is such a powerful turning point. It’s not the end of youth, it’s the beginning of intentional living.
What Happens When You Turn 40
Your Metabolism Slows Down
One of the most common shifts women notice when they turn 40 is that maintaining weight becomes harder, even if they haven’t changed their eating habits.
This happens because metabolism naturally slows with age due to hormonal changes, reduced muscle mass, and decreased daily movement. Estrogen fluctuations can also contribute to fat being stored differently—especially around the midsection.
How to prevent or delay this:
Focus on strength training, increasing protein intake, and staying consistent with movement. You don’t need extreme dieting, you need sustainable habits. I explored GLP’s for inflammation and heart health this year at the age of 39 and it has been a GAME CHANGER! You can read my GLP experience in my blog post: Why I Chose GLP Therapy | Inflammation, Hearth Health, & Preventative Health Care.
You Start Losing Muscle Mass
After age 30, muscle mass begins to decline gradually, but it becomes more noticeable in your late 30s and early 40s. This matters because muscle is essential for metabolism, strength, balance, and long-term mobility. Less muscle can also mean more aches and pains, slower recovery, and reduced energy.
How to prevent or delay this:
Prioritize resistance training at least 3 times a week, even if it’s just dumbbells, Pilates, or bodyweight workouts. Muscle is one of the best “anti-aging tools” you can build. I have gotten into Pure Barre workouts for muscle building, strength, and flexibility which really helps to elongate my body.
Hormones Begin Shifting
Many women start experiencing early signs of perimenopause in their late 30s, and by the time they reach 40, hormonal shifts may become more obvious. I was diagnosed as being “in perimenopause” at the age of 39. My doctor put me on progesterone to balance out my hormones. Keep in mind, perimenopause hits everyone different so consult with your doctor for your specific hormonal needs.
You might notice changes like:
- Mood swings
- Sleep disruptions
- Increased anxiety
- Irregular cycles
- Skin dryness
- Hair thinning
- Low libido
How to prevent or delay this:
Support hormone health with sleep, stress reduction, proper nutrition, and bloodwork to track imbalances. I took the Superpower bloodwork test to help me identify all the bodily changes that were happening as I aged. Not only did it pinpoint high-cholesterol, perimenopause, and inflammation, it also recommended supplements to help get my body back on track! Supplements and lifestyle shifts can make a major difference, but it starts with awareness. (Get 10% off your Superpower Test here)
Your Risk of Chronic Disease Increases
Heart disease, high blood pressure, insulin resistance, and inflammation-based conditions become more common as we age. Turning 40 isn’t a guarantee that you’ll develop these issues, but it is a reminder that prevention matters.
Many chronic illnesses don’t happen overnight—they build quietly for years.
How to prevent or delay this:
Get proactive with health screenings (again- SUPERPOWER), monitor cholesterol and glucose levels, manage stress, and reduce inflammatory habits like excessive sugar, alcohol, or sedentary routines.
Your Skin Changes More Noticeably
Skin begins producing less collagen in your 30s, but by the time you turn 40, it often becomes more visible. You may notice:
- Fine lines
- Volume loss
- Dryness
- Texture changes
- Increased sensitivity
- Hormonal breakouts
This is also when many women realize that their makeup routine needs to evolve. The dryness, texture changes, and hormonal breakouts prompted me to swap my entire skincare line to focus more towards aging hormonal skin. I also got on a Tretinoin retinol which helped tremendously. It is key to get through the initial “purge phase” of the Tretinoin.
How to prevent or delay this:
Hydration, SPF, retinoids, peptides, and consistent skincare become essential. If you want help adjusting your beauty routine, I highly recommend reading my post on makeup tips after 40, because your makeup can either enhance your glow—or emphasize dryness.
Your Priorities Shift
Emotionally, turning 40 often changes what you tolerate, what you chase, and what you value.
Many women report that by 40 they care less about pleasing others and more about protecting their peace. I know that is RIGHT! You may feel more aware of time, more selective with relationships, and more motivated to live intentionally.
This is one of the most beautiful parts of the turning point that comes with 40. It often brings clarity.
How to embrace this shift:
Let it guide you. Your boundaries are wisdom, not selfishness. If you are interested in a new topic or hobby, explore it! You are never too old to learn something new. I decided that I wanted to get certified in Astrology before my 40th birthday, so I enrolled in an online course! Explore your interests. You may be surprised that they have evolved as you have gracefully aged.
What To Do Before Turning 40
Schedule Comprehensive Health Checkups
Before you turn 40, schedule a full health evaluation. This is not just a basic annual checkup—it’s about understanding your baseline health. THIS IS KEY! You want to be proactive about your health in your second half, NOT REACTIVE!
Ask your doctor about personalized screenings, including:
- Blood pressure
- Cholesterol
- Glucose and insulin
- Thyroid markers
- Vitamin deficiencies
- Hormone panels (especially if symptoms are present)
Why it matters: You can’t fix what you don’t measure. Knowing your health markers now can help you prevent bigger issues later.
Build Foundational Habits
If you want your 40s to feel strong, your late 30s should be about building the habits that make strength inevitable.
This includes:
- Daily movement
- Better sleep hygiene
- Hydration – I have recently started a habit to down 1 glass of water as soon as I wake up to refresh my body and soul.
- Balanced meals
- Nervous system regulation
Why it matters: Your habits become your future. You don’t want to enter your 40th birthday feeling like you’re starting over, you want to feel like you’re leveling up. Habits don’t form overnight, get started a year or two prior to turning 40. So you will be ready when the decade turnover comes.
Adopt Nutritional Habits That Support Longevity
Turning 40 is a great time to simplify nutrition and focus on what supports long-term wellness.
Instead of dieting, focus on:
- Protein-forward meals – this is essential for women since our muscles start to weaken in our middle age. Be sure to consume healthy proteins.
- Fiber-rich foods – I like a banana chia shake for breakfast with peanut butter. These are super high in fiber!
- Healthy fats
- Reducing processed foods
- Eating for blood sugar balance
Why it matters: Blood sugar instability is one of the biggest contributors to fatigue, weight gain, and hormone disruption as women age.
Prioritize Strength Training
If there is one fitness habit to master before you turn 40, it’s strength training.
Muscle supports:
- metabolism
- hormone health
- bone density
- posture
- energy levels
- longevity
Why it matters: Cardio is great, but muscle is what keeps you thriving long-term. Since I hate cardio, I love this about our 40s. We don’t have to always “run” ourselves into the ground. We can shift focus to stationary weights and movements that promote strength over sweaty, high intensity workouts all the time.
Establish an Emergency Fund
Financial stress can feel heavier in your 40s, especially if you’re managing children, a mortgage, or unexpected life events. Aim for 3–6 months of expenses in an emergency fund. A few years back I opened a high-interest AMEX savings account to build upon my emergency fund. The financial security that you feel when you know you can live for at least 3-6 months should anything happen to you or your family is indescribable. It’s one less thing you have to worry about when it comes to “adult-ing.”
Why it matters: Turning 40 is often a turning point where you start thinking less about “getting by” and more about stability and security.
Pay Down High-Interest Debt and Maximize Retirement Savings
Before you turn 40, take a close look at your financial picture. If you have credit card debt or high-interest loans, create a plan to eliminate them. Also consider increasing retirement contributions if possible.
Why it matters: Your 40s can be your wealth-building decade, but it starts with getting organized.
Review Insurance Needs
This isn’t the glamorous part of adulthood, but it matters.
Before turning 40, review:
- health insurance
- life insurance – If you don’t have it yet and you have a family, GET IT!
- disability insurance
- home and auto coverage
Why it matters: As responsibilities grow, protection becomes part of peace.
Create or Update Estate Planning Documents
Even if you don’t think you “need” an estate plan, having a will, power of attorney, and healthcare directives is essential, especially if you have children.
Why it matters:
Turning 40 is about being prepared, not paranoid. It’s about being responsible with the life you’ve built.
Invest in Quality Relationships
One of the biggest lessons of turning 40 is realizing that your circle matters more than your social calendar. Strengthen relationships that support you and release ones that drain you.
Why it matters: Your emotional health is directly connected to who you spend time with.
Define Personal Goals and Values
If you want your next decade to feel meaningful, you need clarity on what matters most.
Ask yourself:
- What kind of life do I want?
- What do I want my days to feel like?
- What am I tolerating that I’ve outgrown?
- What do I want more of?
Why it matters: Your 40s shouldn’t be about drifting. They should be about direction.
Commit to Your Own Glow Up
Preparing for 40 is also about confidence. It’s about stepping into your next chapter feeling like the best version of yourself. If you’re in that season right now, you’ll love my post on middle age glow up because it shares the lifestyle shifts and mindset changes that truly help you feel vibrant again.
How To Celebrate Turning 40
Plan a Celebration That Feels Like YOU
Your 40th birthday doesn’t have to look like anyone else’s. It can be big, small, glamorous, quiet, or adventurous. The goal is simple: celebrate in a way that reflects your personality and values.
Why it matters: Turning 40 is a turning point, and your celebration should feel intentional, not forced.
Take a Trip That Marks a New Chapter
Travel is one of the best ways to celebrate turning 40 because it creates memories and gives you space to reflect.
Whether it’s Paris, Napa Valley, or a cozy weekend getaway, the symbolism matters.
Why it matters: A new decade deserves a new experience.
Host a “40 Things I Love” Dinner Party
Invite close friends and have each person share something they love about life right now—whether it’s a lesson, a ritual, a product, or a mindset. You can also share 40 things you’ve learned or 40 things you’re grateful for.
Why it matters: This kind of celebration turns your 40th birthday into something meaningful and emotionally rich.
Do a Personal Photoshoot
A birthday photoshoot is not vanity, it’s self-celebration. Turning 40 is the perfect excuse to dress up, feel beautiful, and capture the version of you that worked hard to get here.
Why it matters: It’s proof that you are still becoming.
Create a Vision Board for Your 40s
Instead of only looking back, use your birthday to look forward.
Create a vision board focused on:
- health goals
- travel dreams
- financial intentions
- relationship desires
- personal growth
Why it matters: Your next decade should be designed, not guessed.
Start a New Ritual
Your 40s are a great time to begin routines that make you feel grounded, peaceful, and supported.
Examples:
- monthly solo dates
- weekly Pilates
- a daily supplement routine
- journaling every morning
- Sunday resets
Why it matters: Small rituals create massive transformation over time.
Celebrate With Meaningful Giving
Some women choose to celebrate turning 40 by giving back, whether it’s donating to a charity, supporting a women-owned business, or volunteering.
Why it matters: Giving creates purpose, and purpose is one of the most powerful “youthful” energies there is.
Final Thoughts on Preparing for Turning 40
The truth is, turning 40 isn’t something to fear—it’s something to prepare for with intention and confidence.
Your 40th birthday is not a deadline. It’s a turning point. It’s a chance to choose your health, your stability, your growth, and your joy more consciously than ever before.
When you turn 40, you deserve to feel strong, vibrant, and financially empowered. You deserve relationships that nourish you. You deserve a life that feels aligned with who you are now—not who you were ten years ago.
And the best part? Preparing for turning 40 doesn’t require perfection. It requires consistency, awareness, and the willingness to show up for yourself.
Because this decade isn’t about getting older. It’s about getting wiser, freer, and more intentional.
Please Note: I always strive to provide accurate and helpful information, but just a quick heads-up—I’m a blogger, not a doctor, lawyer, CPA, or any other kind of certified professional. I’m here to share my experiences and insights, but please make sure to use your own judgment and consult the right professionals when needed.
Also, I accept monetary compensation through affiliate links, advertising, guest posts, and sponsored partnerships on this site, however I am very particular about the products I endorse and only do so when I am truly a fan of the quality and result of the product.
