Hypnosis Training College - Hypnotherapy Certification - Hypnosis Motivation Institute Hypnosis Certification and Hypnotherapy Training at the Hypnosis Motivation Institute. HMI is a non-profit nationally accredited hypnosis training college and clinic of hypnotherapy that has been serving Southern California for more than 50 years (Since 1968). Train to become a Certified Hypnotherapist at the Hypnosis Motivation Institute in Tarzana California.