Hypnotherapy is one form of therapy which is performed while a subject is in hypnosis. In this state a hypnotist is able to use power of suggestion in order to help the subject in many areas like overcoming a phobia. The earliest evidence of the hypnotherapy is in the ancient India, where the people would usually take their sick in order to sleep temples to be cured through power of hypnotic suggestion. One doctor refers to their creating the type of conditions in the person where they usually accept what he has referred to as “reality of the hypnosis.” Other practitioners include James Braid, who is notable for his shaping the concept of the hypnotism as forms of psychological treatment. There are different kinds of hypnosis. Self hypnosis is the act of inducing the self into states of hypnosis. Having one person to induce the other person into states of hypnosis is usually known as hetero-hypnosis. Hetero-hypnosis is the kind of hypnosis used in most hypnotherapy. Hypnotists must have hypnotherapy certification.