They say that the greatest trick the Devil ever pulled was convincing us that he doesn't exist。 In this book， Yehuda Berg uses the device of an "as told to" autobiography to explain the concept of The Adversary， which plays a major role in Kabbalistic wisdom。 We learn that Satan resides within everyone， manifesting as a recurrent little voice of uncertainty and negativity， and that that is how havoc is wreaked throughout the world。 By doing the spiritual work that Kabbalah teaches， we can banish doubt and evil influences from our lives， and eliminate chaos from the world。 Although author Berg takes creative license with the narrative， he presents a truthful representation of Kabbalah's view on the force of evil in the physical universe。