Show Details Gary Null, Ph.D., has developed a unique system for explaining why people are the way they are, He calls this system Life Energies, and it goes far beyond conventional understandings of personality and behavior. Dr. Null identifies three main personality types, dynamic, adaptive and creative, and shows how each personality type can be used as a tool for understanding or predicting human behavior. Dr. Null has thus devised a novel and workable approach to understanding a variety of personality traits and how these traits can influence motivation, success, and happiness. An awareness of the special Life Energies that each of us possesses can help us to achieve more fulfilling relationships, more harmonious communications, and greater understanding of ourselves and others.