We sometimes do things to prove something. Sometimes to prove character, honesty, to show love, to be considered good, sometimes to prove your care, and list goes on. Sometimes to prove that we belong to a class called cool. Most of the time we want to prove something which we are not.
Everyone needs some sort of acceptance. He wants to be praised. Sometimes people start taking pride in some non sense things as well, as i once saw a person who took pride in eating a lot, someone took pride in being short tempered. Its a kind of pride that inhibits them to leave these habits which even they know is harmful for them.
Show of character is very prevalent in girls and guys even. They feel happy if some one gives them certificate of what they had wanted to prove and then it becomes disastrous. It shows in their character permanently.
Everyone has his own traits.just prove to yourself what you are. Change self if you find better paths. What's show is for??