In every case that I know that has been successful...they get help through prayer. Someone was praying for them to keep them above water until they could get healthy enough to get through it on their own. I don't mean just a little prayer said in passing and just thinking about it. I mean the person praying was on their knees for a long time - years - praying that God would get the spouse/child through it. It takes a long time. Adolescence takes a long time.
Let me ask you a question. If this was your teenager putting you through this would you walk away? Some of you would - I know that - we see on the news about parents walking away from their kids every day. BUT if you wouldn't walk away from your kids why are you giving up on your spouses? Because you expect your spouse to know better?! If that's the case, then you don't understand what your spouse is going through. We have patience for our kids and we put up with a lot from them and we pray from them every day... Doesn't your spouse deserve the same?
Okay - sorry to have taken over.
Fireproof - prayer and lots of it. Not just you but family and friends praying too.