These hidden secrets of motivation are based on the author's review of scientific literature. (However, he does not go into much detail as to how the review was done.) Religious faith is one of the "Secrets" of motivation, though the other tries to make it clear that a non-religious person could also use this "secret". (He does do a good job of making it accessible to all, but it feels like he does have to do some reaching to get there. There was nothing groundbreaking, but the work was made very accessible.
