I was one of those smokers who can not even imagine spending an hour without a cigarette. I was scared to try to stop. I read this book that made me see my problem in a way quite different from that usually presented by in smoking cessation. I stopped for 3 months. So yes it is hard but this book helped me to take the same shot if he sometimes makes a little jam skull. To keep handy when you feel like going to crack and to advise all heavy smokers who need help.