i've been reading the posts for a while and it took me some time thinking if to answer to it or not...I met the Family a long time ago and I'm happy my parents struggled to get me out of them back then. I live in Romania now and this is where I met them...
It took me over 8 years to recover mentaly from the brainwash I received from the Family - now I'm a succesfull manager, working in financial field.
It's hard to give advice, but I do believe that the healing starts from within. What worked for me: I spent a lot of time in the nature talking to myself and asking questions...first I started by blaming God, then I realized He has nothing to do with it or this Cult. My only fault was that I met the Family when I was a teenager and I believed the bullshit they were selling, as any teenager does...
Tell your friend to love himself. This is a very important process in healing his heart. He has to accept himself and the things that happened to him. There's nothing he can change in the past. But he can change his future!!!
What really helped me is the fact that I have a positive attitude towards life. Still, it took me a while to accept that I lived a lie and the real world is far from the Family.
If your friend believes that by talking to someone else (and by that I mean profesional help) can release the burden on his heart and mind, encourage him to do it. But if not, don't pressure him.
Whatever he chooses, for sure drugs are not an option. It's just another illussion...drugs never solved problems. They only help you forget for a very short while about your problem. And when you "wake up" you realize you are still stuck with your problem.
Anyway, the most important thing is TO MOVE ON! Look forward. The future is ours and everything depends on us: if we make it a happy or a sad one!