He just needs to cut everyone off and everything to do with it really. And take up things to keep his brain occupied. Meditation and hobbies. Its hard it really is.. you get tested so many times.
I went to a hypnotist and it worked for 3 week. Then some one i know who has never sold it. Pulled aload out in front of me and said they was selling it now. I didnt get any off them. But my mind then was set on getting it, and i did. You get tested like this all the time. You just have to avoid so many situations. Your brain tricks you into these situations wanting it even tho you dont want to.