I should start by saying I would have considered myself very "above average" with "thinking" about am I making a "correct putting stroke?" I know there are flaws in my stroke (relative to it being perfect"), but I have been a scratch player in the past so the stroke was not really "horrid." I just always felt if I were to have a good putting day I'd have to really concentrate on making a technically great stroke. My misses have usually been a push, especially on short putts.
The book really had me to "let go" of trying to make a perfect mechanical putt. With that said there are some basic key things in the book that are discussed with executing a good putting stroke. Those things for me I felt I was doing pretty good.
The book got me away from thinking about the technical aspect of making a stroke and really focusing on the speed and then the line. I now "trust" my stroke, since it was technically "good enough". The book completely changed my preshot routine as well as how I execute the stroke, and what I focus on when putting.
Simply now I do everything I can to get the ball rolling, and rolling on the correct line for the speed I want. Does it really matter "how" I get the ball to go on the line with correct speed, I don't think it does as much as I use to think it did.
This is still very much a work in progress but I do feel I have a chance to make a lot more putts, and last Sunday I did.