I expected a lot before writing this review, because it is thought to have stopped clop and then a year or two later it resumes. it happened to me already. by cons, after carefully reading this book in good time and having followed his advice precisely, I think I can say without problem to have finally finished with cigarettes. I smoked from age 15 to 29 years I think. now I am 37 years old. never resumed, no regrets, never attempted. cigarettes do with me any more simply, I became a non-smoker. without using another product to stop (patches, etc.) I smoked a pack a day to the max, then over the years I reduce, I smoked five a day when to stop. good luck!