This book is a treasure ... the key to effectively and permanently stop. It's a bit like a man, the worst of all (100 cigarettes per day before it stops) sat in front of you in a cafe and you spoke. As your friend. It will explain rationally why you continue to smoke and benefits (few you'll see ...) and disadvantages has in being a smoker. In closing the book you will not stop by will but ... out of spite. You will see even more useful! His method really works and will work on your deep unconscious. However, and I really insist, do not read ONLY if you are 100% sure want to stop !! However, if you decide to read it out of curiosity, because a friend talked you for example, know that it will still have the effect (I have stopped smoking for 2 weeks while I do not going starting reading ...) If by cons you have tried everything (patch, laser therapy, etc.) this book is for YOU! Go for the purchase !!