This actually works but I think you need to have a positive attitude to the possibilities of this book. I don't think there is any magic solution here just common sense from an ex-smoker.
I read the book and apart from one evening haven't smoked since and it's been easier than any other method of stopping smoking that I have tried.
As soon as I finished reading it, I started again and am about half way through now. I'll read it a hundred times if that what it takes.
Only downside is people think you are referring to the comedian when you refer to Allen Carr. Get ready to say, 'No, not that Alan Carr', a lot.