this is what you called teenagehood, and i reassure you that things will work out for you. All you've to do is occupy yourself with things that will give a positive atmosphere.
Something tells me that you hate yourself, but there's no reason to. You have qualities that other people wished they could have, and the only problem is you don't look at it that way yet. You've to appreciate yourself, and not beat yourself up.
The first thing you should do is write a diary , and then write plenty of reasons to love yourself. It could be
1) I'm better than i think i am
2) I want to find out more good qualities about me
3) I'm a young person with a world of experiences to get into
4) There's so many possibilities for me
and so on. There's so many reasons to not hate yourself.
You'll always have our support!