If I may diverge from the main topic but to your point. I'd venture to say that the act of putting reminders and thinking about smoking is the reason you failed.
I stopped smoking with the same book but the it worked (as I understand it now) is that it breaks down every excuses you gave yourself to smoke while it actually encourages you to keep smoking while reading. At the end of the book you just have no reason left to smoke. What happened for me when I closed the book is that I just continued my life as if I was not a smoker, never actually thinking about it. No withdrawal of any kind but I didn't remind myself that I used to be a smoker, never. I know it but it's not something I think about