Let me tell you one thing: You have to accept that you are who you are.

But I don't wanna be who i am...i want to change for the better!

That is fine. But even if you do change, you will still be who you are.

i am who i am, but i didnt know who i was
i thought i was someone different
but now i know who i am and its not who i thought i was
but it is who i am
i think.