What i would like to change about myself

Everyone have their own bad and good behaviour.Like me also, i would like to change my bad behaviour.First of all, i want to change my attitude such as always do something or benific to me.Other than that,i want to study more hard to achieve my ambition.i'm also want finished my studied with succesful and achieve what i want in my life can be mine.in the other hand,i would like to change all my bad behaviour to good behaviour such as be more responsible person,harworking and so on.