I've read it as well and it's nice to read about how you can improve your overall EV by making changes to how you approach the game itself and not individual hands. It makes sense in that things like tilt and distractions can cost you money just as easily as a leak in your game can.
You can read a summary on his site here and decide if it's for you.
http://dustyschmidt.net/about_dusty_...ss-poker-book/
I dunno how you feel about your overall poker mindset but I felt like it made me more serious about my playing. I mean these are actual dollars we're playing for and I certainly wasn't giving it the seriousness it warranted previously.