Maturity is the most desirable quality in person for living life to its full potential and maintaining harmony in relationships. There are many traits of a mature person which help them to see the bigger picture in every situation to stay calm and composed, maintain the harmony in relationships and pave the way for their growth in life. A mature person takes responsibility to act and behave with due consideration and far-sightedness.

Maturity is the ability to take responsibility for own action and behavior to respond to the situations appropriately based on long-term interest rather than immediate gratification or avoidance of unpleasant situations. Maturity makes a person to grow towards their highest personal potential and to be at peace with themselves without any ambition to prove the world, how worthy, intelligent they are.

In other words, maturity is the lack of immature. When a person stops showing immaturity, they become mature. The immature behavior could be; comparing self with others, having an expectation from others, trying to change others rather than keeping the focus on changing self, not able to differential between 'need' and 'want', not able to 'let go' of things, which are holding them back, attaching happiness with material things, and of the same.

Although age is supposed to bring experiences with it crucial for improving the level of maturity, but it is not a deciding factor. Some people mature early; others either mature by later stage of their lives or never mature, even though they age. Maturity is a discipline to learn rather than a trait coming with age. To attain maturity you need to be willing to learn and grow. Maturity is a never-ending cycle of learning lessons and applying them.

https://www.kavikishor.com/2016/take-responsibility-to-attain-maturity.html