Mutant
Your friend is abusing substances and sounds like he is in control. Whatever you feel about my comment i don't really care. Your friend if he wants to stop doing something he should stop doing it. After he makes the decision to stop bask in all the following emotions feelings and thoughts he has for however long they happen. For self control will be one of his first lessons. For stopping substance abuse is an experience, a lesson on its own. If he thinks there is an easy way then he is wrong. That is what life is. To experience and work through things. If you want to be a doctor you must learn, if you want to be spiritual you must learn, if you want to stop substance abuse you must learn.
Love you all !!