This document provides an overview of hypnosis, including definitions, theories, types, clinical uses, benefits and side effects, and misconceptions. Hypnosis is introduced as a state of heightened focus and suggestibility that can be self-induced or induced by a hypnotist. Theories discussed include role theory, altered state theory, and dissociation theory. Types of hypnosis covered are traditional, self, NLP, and Ericksonian hypnosis. Clinical uses highlighted are for phobias, smoking cessation, confidence building, motivation, and performance anxiety. Benefits include reduced anxiety and pain relief while side effects are usually mild. Common misconceptions are also addressed.