I agree that he has to have the will to do it and really want to do it for himself and no other reason. Just becasue you want him to really badly, doesn't mean that he wants it just as bad, know what I mean?
My husband and I quit 3 years ago using hypnosis. He smoked for 16 years before that and he was truely addicted to the nicotine (most people are only addicted to the motion of smoking and not the chemicals). WE both went into it knowing that the cigarette we smoked on the way there was the last one for us. We both really wanted to quit for our own reasons, each separate from the other. Neither of us has touched one since. The craving is still there, even to this day, but its the will power we have to back it up that keeps us going strong.
On another note, my grandmother smoked for 50+ years and decided about a year and a half ago to quit. She got a prescription for Chantix from the Dr. It was very hard for her and she had serious mood swings while she was on it, but in the end, it worked for her. Once again though, she really wanted to do it.