I guess it is about believing...and through guided imagery, Bernie Siegel guides you to gain an understanding of one's problem health issue/s, and what we need to do and how we might overcome it /them, in helping ourselves. This is about using the power of one's mind. As the C.D. cover says "gives insights into Hope, Peace and Healing". I have a rather serious immune system problem and i use this C.D nearly everyday...time will tell how successful i have been in implementing the knowledge i have gained from the C.D.. I found guided imagery fairly easy to implement....I now wait my next pathology results!