This book is like having a conversation with your friend, in that, your friend is imparting some wisdom.
The language is raw, easy to grasp, there is nothing very technical being said, and you feel like you already know what he is saying, but never really realized it until this moment.
It's a simple book which talks about the very basics of life, but these things are counter-intuitive, and hence we don't really think about them until Mark tells us. The language used in the book is as raw as the title, but it is a good change that kind of makes the book feel alive.