I found this book very good. I have been doing meditation on and off, i realized its calming effect. I found Mantak Chia from Conscious TV interview, and since I've restarted doing tai chi, I got interested. I've also got lot of problems in the head area(yeah, no physical), like teeth, thyroid etc, so I thought maybe this method could balance me. It's easy to read, very clear. Next step is self-discipline. But the book delivers. Does it work? well, been at it for a week, and I drop into a calm state almost immediately and fell my blood circulating well and making very warm. We will see!