Suicide is a joke. Don't end your life now. You've got many things coming along your way, if you just give it a chance. Your friends and family will be heartbroken once they hear what happened. I and everybody else on this site is here for you.
I often think way too much as well, but hang in there. Often the problems we have today are just that.. Today's problems. Like Alyssa said, there's a lot more coming along and you'll be happy again even if it doesn't seem like it right now.I'm currently a bit heartbroken but even this will heal in time, and it's the same kind of feeling where when you're given advice you just kindof roll your eyes at people and go "Yeah, right." Thing is people usually are actually right.. even if it doesn't feel like it now. Things are going to be okay and better. Just hang in there.
I am sorry to hear you are struggling, however the best advice I can give to you is to be patient, it also helps to talk about it to someone, I told someone close to me, it was hard to start speaking but I felt better.
What? Please don't! I feel that way too a lot but, please don't! You should love yourself enough not to, you wouldn't kill someone you loved, would you? Try what I try instead: go to sleep. Get a good, long rest. When you wake up, maybe things won't seem as bad. It's a less permanent version of the same thing. If you're asleep and you don't like it, good news: you can wake up. If you're dead, you can't just come back. You're thinking of it as a solution, but just imagine how terrifying or horrible it might be. :(