My Kid has an Addiction

I have finally come to the realization that many parents have to come to eventually. It is hard to face, especially when you have those feelings of guilt and you feel as if it were your fault or you could have done something...my son has an addiction. He is at it constantly. At first, I thought, "Oh, it isn't that bad. It's only once or twice, he can quit whenever he wants." But now, this addiction has almost cost him his life twice, he has begun stealing to feed his habit, and he cannot control himself when around it...my son is addicted to eating paper.