Took me a while to read this one.
The concept is compelling. The build up is impressive. More so in my case, because I was able to relate to the thought pattern and identify with the philosophy.
My problem with the book - It's repetitive. A significant chunk of the book is nothing but repetition. It does get annoying for someone who moves to the next page only after understanding the current page. It's annoying because… well I GOT THE IDEA. I KNOW THE CONCEPT. MOVE ON!!
It drags for some time. After all the redundancy in the middle part of the book, the conclusion seems refreshing (and a bit of a relief).