I know about this.
When I was 16 I felt the exact same way. But you know what, krs2snow is exactly right: as you grow older you will have the benefit of hindsight.
I don't want to sound like I am talking down to you as though I know it all, I don't. But what I can say is that I am 24 and I feel so much more optimistic about my future than I did even two years ago.
A brighter future is possible. You need to believe and talk, talk, Talk, TALK! Yes!
I know this might sound corny or perhaps just a bunch of useless words aimed to make you feel better, but no! I mean it.
I am only 24, still very young. You are not old my friend. There are many more horizons for you to travel. So much lies ahead. I wish I could enlighten you but the future is a beautiful thing, because with an optimistic mind it is full of wonderous mystery.
Am I sounding too la-di-da? I hope not.
Mate, all I can say is trust me. Right now, you feel horrible, that there is nothing that can bring you out of the despair you feel and that this will continue for the rest of your days, mate this is simply not true.
The most important thing is to believe in yourself. I know it's hard, because social phobia has the ability to strip us of our confiedence.
But mate, talk to a friend you think you can trust. Talk to a school counsellor. Talk to your parents. Or if you would like, I'll send you my email address and we can correspond. Whatever you think woulld work.
I feel for your pain, as I know it from experience. Remember that there is strength in numbers, as long as we stick together, nothing can stop us!
(Sorry for being so over the top, I can't help it, I care.)