I've worked with people with addiction problems. Unless the person reaches that moment where they themselves say "enough", they aren't on the road to recovery. Even when they do, it's tough enough.
It's very interesting you should say that.
I've recently read a book called 'The Heroin Diaries' by Nikki Sixx (motley Crüe bassist), he was addicted to heroin, it basically took over his life, he wasn't interested in money, fame, or women, he just wanted his fix of heroin & went to extraordinary lengths for his addiction.
After many years of abuse, he woke up one morning and just said "enough, I don't want this anymore".
He's been clean ever since.