Why don't be yourself? Why do you have to change just to make someone like you?
You don't have to change who you are and be who you aren't.
Just like Lady Gaga said, "Baby, you were born this way".
You can be sure that people will love you for who you are. Start loving yourself. Stop saying that you're fat, ugly, horrible. Ignore what people say about you, they must be jealous.
If YOU don't love yourself, WHO is going to love it?
"Who says you're not perfect?" - Selena Gomez
Don't be afraid of doing what you want, don't be afraid of being who you are, don't be afraid of what people will say about your new haircut, don't be afraid of anything. It's only going to be worst for you.
Don't let anybody bring you down, just because they don't like you for who you are.
All you have to do is:
"Rejoice and love yourself today, 'cause baby... YOU WERE BORN THIS WAY" - Lady Gaga