When you're younger
you don't look at people and think "They're ugly. I'm ugly. I'm fat." All you think is they're a boy and they're a girl. simple.
When you get into your teenage years
you start to become insecure, and you hate yourself, hate everyone, hate everything you do. Think nothing can get better. Your life is over.
Then you grow out of it
and you realize your appearance doesn't matter. You don't need to impress anyone, and life doesn't suck that bad.
It gets better, it really does.