[ThunderClaw]

It depends.

Is your friend simply overreacting to a certain event, or has this been an ongoing dillemma?

If it's the former, what he needs is to have a talk with somebody with a large reserve of common sense (neighbor, school councillor, parent--any will do, but a disinterested third party is really best) and insight to point out calmly and logically that the event in question really isn't that bad at after all and things could be worse. Then he'll need the support of friends to put the incident behind him.

If it's the latter, then the entire family needs to see a professional psychologist to unearth the CAUSES of the dillemma instead of chasing after the effects and then ACTIVELY WORK to correct them. This requires the person involved, any siblings they have, and the parents. A family unit must act like a unit and work in a disciplined, synchronized manner to effectively combat this sort of thing.

I am, of course, assuming that your friend WANTS help and is willing to go the distance to actually accept the idea that he might go into a psychologist and get professional help. If he/she is not and continues to wallow in his/her own self-pity, then he/she is a complete and utter fuckwit who is going to be nothing but a burden to everyone he/she comes in contact with until they get off thier tear-soggy asses and actually try to help themselves.