When you see show hypnosis on television and audience members are jumping about the stage clucking like chickens remember that they volunteered to do that in full knowledge that they would be expected to do something crazy . Sometimes hypnotherapy is used for purposes of revealing repressed memories or information. Persons undergoing hypnosis for those reasons choose to reach deeper trance states than normally used in hypnosis. They are actively seeking to reveal the repressed information. Under ordinary conditions, a hypnotherapist cannot make someone reveal any information against their will.
All hypnosis is self-hypnosis.
Today every student and practitioner of hypnotherapy knows this as a core truth. You have to want to be hypnotized before a trance state can be achieved. A state of deep relaxation means that you are relatively free of the usual busy thought-traffic that bombards your mind in everyday consciousness. Without all the usual distracting clutter, your mind is able to direct itself and focus much more clearly. As you achieve relaxation, the hypnotherapist might suggest that you imagine yourself in your favorite place, at your favorite time of year.