Shadow is everything in us we can't see--everything we are not conscious of. Our Shadow self monitors hundreds of thousands of inputs from the world and our body/mind systems, processes the information, and constantly sends constructive and destructive messages into our conscious awareness in the forms of sensations, feelings, impulses, stories, and thoughts. This Shadow material is generated in less than a tenth of a second, and our conscious selves become more or less aware of it after one or two seconds, leaving our conscious awareness always one step behind the non-conscious flood of Shadow material. Personal development is largely growth of our Shadow selves--our adaptive unconscious in which resides our deepest senses of self, morality, intimacy, vulnerability, and spirituality. Shadow Light offers a wealth of research, ideas, and practices to help us grow our Shadow selves and accelerate personal evolution.