This book, like many others, was a gift for my wife. We both have read at least parts of the book, she more than I, and she has enjoyed all that she read. She considers the book well written and well organized.
I got this for my husband for Christmas. He enjoyed it--said it was very inspirational, yet easy to read. He doesn't have a lot of time to read books, but took it with him on vacation. He had read Si's book last year, and liked it also. While we don't watch their show, we have a lot of respect for them from what they have written. They aren't ashamed to speak what they believe.