I've now read the book. The storytelling seems perverted at times, like an infomercial script.

However, I think it's quite valuable to people like me, who often fail in the way it describes.

I think the selling tactic used is: we can easily call the protagonist on his self-deceptions and defenses against accepting the premise, in a way that we'd hesitate to take ourselves to task over. Because his reasons are so transparently bad, we distance ourselves from his position and accept the authors'. Nice trick.