My parents were both heavy smokers. My mother was able to just cut back one a week and eventually stop. My father tried everything...patches, gum, chantix, you name it. He had to stop chantix because like others have stated it was really messing with his mind and he's always been the level headed kind. After years of trying to quit my mother convinced him to try hypnosis since at this point he had nothing to lose. He has now been smoke free for a year and he was a two pack (at least) a day smoker.