Maturity means to be grown up,to be balanced,sane, and able to cope with life
Here are the signs.
1.One must have the ability to deal constructively with reality: To face facts, to resist covering, or calling reality something else,to deal with it as it is.
Mature people do not kid themselves.

2Ability to adapt to change: we all experience change, whether it be physical, emotional,spiritual,mental,relational or vocational.Immature people,resist change; It makes them nervous. But the mark of maturity is to adapt to change because change is inevictable.

3.Freedom from symptoms of tension and anxiety: The worried look, the frown,the ulcer, the palcipitations of the heart-all come from anxiety and worry and lack of trust.
Maturity means you have begun to see God is in control of this world. E working out purposes that you do not always understand, but accpet. He will take you through the deep water, not drown you in it ..
Maturity means you are learning to trust

4 Maturity means being satisfied with givng than receiving:
When you find greater joy in the thoughful planning of gits and surprises for oters, anticipating theor happiness rather your own is a sign you are growing up.
You are discovering the true value of life.

5. The ability to relate with others with consistency,helpfulness, and mutual satisfaction:
Maturity is learning to get along with other people, to be a help not a hindrance, to contribute to the solution and not always be a part of the problem.

6.Maturity is the ability to sublimate and redirect anger towards constructive ends.Maturity is the ability to use the adrenaline created by anger in a positive way, rather than to lose temper and add to the problem.

http://futurelegend001./2013/11/26/six-signmark-of-maturity-are-you-maturedlets-see/

Then I over mature