I read the book and quite honestly was not that impressed with it. When I read a book I basically do one of three things. Keep it (or buy it if I checked it out from the library) if I believe it has life changing insights, make notes in a journal of key ideas or points if some of it has value, then sell the book back or return it, or sell it or return it without making notes, which is what I did with this one

There wasn't anything in it I hadn't seen before, or that was that impactful on me.

Of course your mileage may vary.