Thanks a lot for the informative replies. I read in the booklet that even if I wind up falling asleep, I will still receive benefits but obviously not as strong as if I were to stick w/it til the end. I've been concentrating on the health and success cd's and have definitely noticed a difference in terms of my actions (ie, working out and eating much healthier).

That sounds like a very interesting book and I"ll have to read it. I certainly understand how it's positive thinking that can have an influence on one's health. An example would be getting stressed out and then getting a cold. But I see how Sonic Access would reach at a deeper level, basically transforming one's life.