My other half's brother is addicted to marijuna, he does not think he is because he does not think it is possible to be addicted to it, he is convinced of that He smokes it all day every day,despite having no job. He is aggressive and a bully when he does not have it and he makes people's lives a living misery. I have just about given up on him now as has his sister (It has been going on for well over 12 years now) and I would just like to know, has anyone else quit? Does it happen and does he stand a chance? He is a nice guy when he is "normal" he really is, he is funny, thoughtful and compassionate and so so talented but I would like that brother in law, not the one I have now.