If you have any interest in this subject/topic , I'd suggest that you read "BEAUTIFUL THINGS" written by Beau's brother, Hunter, regarding his numerous episodes within the drug world.
It will make you wonder, "How in the hell do these guys manage to hold prestigious jobs and get ultra rich doing so ?!"
A good friend of mine who was/is a serious drug addict and spent time locked up in a state prison, once told me after his release, "If you trust me even if I stay drug free for years, you are dumb as shit!"
I think he was trying to say that, "There is no such thing as a recovered junkie!"
I suggest you read Hunter's book!