Ericksonian hypnosis, developed by Milton H. Erickson, is a permissive and indirect approach to therapeutic hypnosis. It uses metaphors, indirect suggestions and the patient's unconscious resources to facilitate change.
Self-hypnosis is the autonomous practice of hypnosis, allowing self-induction of an altered state of consciousness. A powerful empowerment tool, it extends and reinforces the effects of hypnotherapy sessions.
Classical directive hypnosis is the historical form of therapeutic hypnosis, using direct and authoritative suggestions to induce trance and modify behaviors. It relies on the subject's suggestibility.