Millions of people try to influence their psyche and brain through psycho drugs and psychotropic medication. So far it is hardly known that the human brain produces its own psycho-drugs. The book provides an overview of the drugs that the body produces itself and shows ways to mobilize these substances - the vision of medicine without drugs. The potentially limitless capacity of our brain, far beyond that of any computer, is only used by humans to a very small extent. Fascinating is the generally little known fact that the human brain produces its own psycho-drugs - e.g. analgesic (morphine-like), anxiety-relieving (valium-like) or generally activating, energy-increasing substances. The book is the first to give an overview of the drugs that our body produces itself and points out possibilities.