I helped a good friend quit smoking by going into detail about nicotine poisoning, talking about how child labor is used to farm tobacco, and that nicotine is water soluble and farmers can get exposed easily. Every time I'd catch them smoking I'd ask him what his child kill count was lately
I know how tough addiction can be on those close. I appreciate you for standing by your friend and helping them through it
A large number of recovering addicts I know had to leave their friends behind because they were bad for their sobriety. You are a good friend. Thank you