The Maturity Principle: Why Personality Improves With Age and Life Experience

Personality is not fixed. Research shows that most people become more emotionally stable, agreeable, and self-aware as they age, supporting the maturity principle.

What Is the Maturity Principle?

Did you know personality tends to get better over time? Psychologists call it “the maturity principle.” It describes how people gradually become more emotionally stable, agreeable, conscientious, and often more extroverted as they age.

While individual experiences vary, research in personality psychology consistently shows that most people change in similar positive directions over the lifespan. In simple terms, it means we don’t stay the same throughout our lives. Instead, we evolve in ways that often make us better equipped to handle life’s challenges.

Why Personality Improves With Age

Personality improves with age because life experience helps people develop stronger emotional regulation, better decision-making skills, and greater psychological flexibility. Over time, individuals tend to react less impulsively, handle stress more effectively, and feel more secure in who they are.

Psychologists also suggest that as responsibilities increase—through careers, relationships, or life challenges—people naturally adapt by becoming more conscientious and emotionally balanced, developing a stronger mindset.

Understanding the Maturity Principle

I don’t know about you, but I’m definitely less impulsive and more self-confident than when I was in my 20s. And now I understand why: our personalities can adapt, and this helps us to cope with the challenges that life throws at us.

Basically, according to research,  our traits are ever-shifting, and by the time we’re in our 70s and 80s, we’ve undergone a significant transformation. And guess what? While people are used to thinking of ageing in terms of deterioration and decline, the gradual modification of our personalities has some surprising upsides: we become more agreeable and less neurotic.

Personality Is Not Fixed: Expert Insights

“You are not a single and narrow type of person – explains Dr Benjamin Hardy, author of ‘Personality Isn’t Permanent: Break Free from Self-Limiting Beliefs and Rewrite Your Story‘. – In different situations and around different people, you are different. Your personality is dynamic, flexible, and contextual. Moreover, your personality changes throughout your life, far more than you can presently imagine”.

In particular, Hardy argues that we can change ourselves anytime and anyway. In fact, our personality has probably changed a ton over the years as “human beings are works in progress that mistakenly think they’re finished.” In other words, as we gain more life experience and battle our way through hardships, our paths are constantly being explored which causes us to grow. 

How Personality Growth Actually Happens

But how does this change happen? “It is often by taking opportunities or responsibilities above (or seemingly “unnatural” to) your skill level and experience that forces the greatest growth. If you’re waiting to find something you feel immediate or intuitive passion for, then you’re going to miss most of your greatest opportunities for growth and success,” he adds.

This idea is supported by psychological research on “stretch experiences”, situations that push individuals slightly beyond their comfort zone. These experiences tend to accelerate emotional maturity, increase resilience, and strengthen long-term confidence.

In real life, this can look like taking on leadership roles, experiencing divorce, changing careers later in life, or adapting to major life transitions such as retirement. Each of these experiences subtly reshapes how we think, react, and relate to others.

Psychological Flexibility and Emotional Maturity

Of course, we don’t simply change our personalities in random ways. However, if you are looking for ways to improve your life, know that the key to personal transformation is “becoming psychologically flexible, not over attaching to our current identity or perspectives. Becoming insatiably committed to a future purpose and embracing emotions rather than avoiding them is how radical change occurs.”

Psychologists often describe this as psychological flexibility, the ability to adapt to changing circumstances, reframe challenges, and respond to life with openness rather than rigidity. This flexibility is strongly associated with better mental health, reduced anxiety, and improved life satisfaction.

From a wellbeing perspective, it also explains why many people report feeling more grounded and emotionally balanced as they move into later adulthood. With less need for external validation and more internal clarity, decision-making often becomes simpler and more aligned with personal values.

Rethinking Life Purpose and Aging

In the end, our life purpose isn’t something we discover, but something we ultimately choose ourselves thanks to our personal evolution. Let’s stop looking for it and make the choice, then allow that choice to transform us.

FAQS

Does personality really change with age?
Yes, research shows personality becomes more stable, agreeable, and emotionally balanced over time.

What is the maturity principle in psychology?
It is the theory that people naturally develop more socially positive and emotionally stable traits as they age.

Why do people become calmer as they get older?
Because emotional regulation improves with life experience and psychological adaptation.

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