Hands down one of the more pivotal texts I've come across. I like telling people that I study PTS "for fun" because literally I find it interesting, and this book is why. It's easy-read yet in-depth psychology addressing the failure of the DSM to recognize shit, as well as psychologic growth in children versus adults. I almost skipped the children part, because like why read about that, but I have to say some pivotal shit. All of it is in the effort to get people to understand that the body affects the brain, and people live in a very opposite world to that. Accepting that you can't "think" your environment into being different, is also surrendering to it, and relinquishing control. This book is a big deal to me, and if you don't read it you're lazy.