Now, I'm still young and I lived a fairly easy life so far, but here is the best advice that I can give anyone:
Laugh.
Laugh often and laugh loudly. The world is a pointless, absurd, cruel place, and there really isn't much you can do about it. So just look at it like a big old joke, and try to laugh at everything that's coming down on you.
Also...if you can listen to this song and still be as upset as you were in the first place, you've got some serious problems ;) :
http://www.youtube.com/watch?v=zidiWe9yq88