Je pense que c'est sa :
I'm the best because I compare myself to people like me. But also because I have ambition, I have confidence in myself and I know that I am able to be the very best. One of my strong qualities that are not found in many famous person and I remain myself, and so I never differentiates others.
Et n'oublie pas de mette les "Je" en majucule genre I 'm the best et pas i'm the best ;) !