The Psychology of Poker By: Alan Shoomaker

I would like some feedback from some serious players on this book. I read the intro in Barnes & Noble the other day and it got me pumped up for the book, however the reviews on Amazon.com are very mixed. (One player even said the book make him worse). I have read HOH1&II, SSHE by Sklansky, Super System, and I am going to read Theory of Poker shortly. After reading these books I feel like I have a strong enough foundation to play solid poker but I want to increase consistency, and decrease the losses I take while on tilt. Do any of you reccommend this book? Has it helped you? Or do you think it can hurt someone with a solid foundation? Thanks in advance for your time and replys. The Chief