I've decided to stop reading this book halfway through.
The reason is that the book contains a small amount of simplistic advice, almost no practical methods for implementing this advice, and a large body of narrated stories of people who the writers researched. The narrative is interesting at first, but grows tedious and uninformative very quickly. I suppose the writer didn't want to throw to waste all the body of text she collected from her tests subject, but that doesn't make that body of text worth my time.

I have a feeling that the book could've been effectively shortened to a booklet or an essay while retaining most of its value.