If you are addicted to smoking, drugs or food this is the book for you as it goes through Alan Carr's programme for addicts. If you're after a book on mindfulness then this is not the book for you.
The first chapter is worth the money for the whole book, showing several interesting and insightful correlations between happiness and almost every facet of human life.
The rest of the book tries to delve into technicalities, but I start to itch at the sight of wild hypothesis and doubtful analysis.
Also, I can't stop wondering why in the world one must always try to find "neurobiological correlates" to every damn psychological theory. It's Psychology, not Neurobiology!