Braid made a rough distinction between different stages of hypnosis, which he termed the first and second conscious stage of hypnotism;[43] he later replaced this with a distinction between "sub-hypnotic", "full hypnotic", and "hypnotic coma" stages.[44] Jean-Martin Charcot made a similar distinction between stages which he named somnambulism, lethargy, and catalepsy. However, Ambroise-Auguste Liébeault and Hippolyte Bernheim introduced more complex hypnotic "depth" scales based on a combination of behavioural, physiological, and subjective responses, some of which were due to direct suggestion and some of which were not. In the first few decades of the 20th century, these early clinical "depth" scales were superseded by more sophisticated "hypnotic susceptibility" scales based on experimental research. The most influential were the Davis–Husband and Friedlander–Sarbin scales developed in the 1930s. André Weitzenhoffer and Ernest R. Hilgard developed the Stanford Scale of Hypnotic Susceptibility in 1959, consisting of 12 suggestion test items following a standardised hypnotic eye-fixation induction script, and this has become one of the most widely referenced research tools in the field of hypnosis. Soon after, in 1962, Ronald Shor and Emily Carota Orne developed a similar group scale called the Harvard Group Scale of Hypnotic Susceptibility (HGSHS).
In 2002, the Department for Education and Skills developed National Occupational Standards for hypnotherapy[45] linked to National Vocational Qualifications based on the then National Qualifications Framework under the Qualifications and Curriculum Authority. NCFE, a national awarding body, issues level four national vocational qualification diploma in hypnotherapy. Currently AIM Awards offers a Level 3 Certificate in Hypnotherapy and Counselling Skills at level 3 of the Regulated Qualifications Framework.[46]
Many religions do not condone the practice of hypnotherapy. Leaders of the Jehovah's Witnesses and Christian Science religions oppose the use of hypnotherapy and advise their members to avoid it completely, whether for entertainment or therapy. The Church of Jesus Christ of Latter-Day Saints approves it for medical purposes, but cautions members against allowing themselves to be hypnotized for entertainment or demonstration purposes.

In as much as patients can throw themselves into the nervous sleep, and manifest all the usual phenomena of Mesmerism, through their own unaided efforts, as I have so repeatedly proved by causing them to maintain a steady fixed gaze at any point, concentrating their whole mental energies on the idea of the object looked at; or that the same may arise by the patient looking at the point of his own finger, or as the Magi of Persia and Yogi of India have practised for the last 2,400 years, for religious purposes, throwing themselves into their ecstatic trances by each maintaining a steady fixed gaze at the tip of his own nose; it is obvious that there is no need for an exoteric influence to produce the phenomena of Mesmerism. […] The great object in all these processes is to induce a habit of abstraction or concentration of attention, in which the subject is entirely absorbed with one idea, or train of ideas, whilst he is unconscious of, or indifferently conscious to, every other object, purpose, or action.[52]

Scenario; you are at a party. Everyone is snacking on food and sipping drinks. You lean against a wall, arms folded, and inhale as you look at the crowd. You scan the room where people are talking while music is playing in the background. You are looking for just the right person that you feel will be the most suggestible. Once you have your prey, it's time to go to work, and this is how you do it.

In a July 2001 article for Scientific American titled "The Truth and the Hype of Hypnosis", Michael Nash wrote that, "using hypnosis, scientists have temporarily created hallucinations, compulsions, certain types of memory loss, false memories, and delusions in the laboratory so that these phenomena can be studied in a controlled environment."[116]
At first, Freud was an enthusiastic proponent of hypnotherapy. He "initially hypnotised patients and pressed on their foreheads to help them concentrate while attempting to recover (supposedly) repressed memories",[61] and he soon began to emphasise hypnotic regression and ab reaction (catharsis) as therapeutic methods. He wrote a favorable encyclopedia article on hypnotism, translated one of Bernheim's works into German, and published an influential series of case studies with his colleague Joseph Breuer entitled Studies on Hysteria (1895). This became the founding text of the subsequent tradition known as "hypno-analysis" or "regression hypnotherapy".
This method of hypnotherapy is commonly beneficial to hypnotherapists in discovering the psychological root of a problem or symptom, such as social anxiety, depression, or past trauma. These types of trauma are often hidden in unconscious memory and forgotten on a conscious level. Using hypnotherapy for analysis has proven particularly effective at digging into the subconscious memory to attempt to retrieve suppressed memories or early developmental trauma that could result in a wide range of psychological conditions or problematic behavior.
I've been "hypnotized" and it's fake - but there's something interesting about it too. Even though i "played along" with the hypnotist in order to put on a good show, I strangely remember feeling no embarrassment, and really calm (if you knew me at 16 I was a really shy person and would never act like a moron intentionally in front of my entire school - but I did). Let me explain.
Neuro-Linguistic Programming (NLP) is the name given to a series of models and techniques used to enhance the therapist's ability to do hypnotherapy. NLP consists of a number of models, with a series of techniques based on those models. Sensory acuity and physiology is one model whose premise is that a person's thought processes change their physiological state. People recognize such a physiological change when startled. The body receives a great dose of adrenaline, the heart beats faster, the scare may be verbalized by shouting, and the startled person may sweat. Sensory acuity, (i.e., being attuned to changes occurring in another person) will strengthen communication to a person in ways over and above simple verbal cues, therefore making the therapist more effective. A second model of NLP deals with representational systems. The idea behind this model is that different people represent knowledge in different sensory styles. In other words, an individual's language reveals that person's mode of representation. There are three basic modes of representation. These are: Auditory, Visual, and Kinesthetic. The same information will be expressed differently by each. For example, the auditory person might say, "That sounds good to me;" the visual person might convey, "I see it the same way;" and the kinesthetic person would offer, "I'm comfortable with it too."

Look for a hypnotherapist who is a member of the American Society of Clinical Hypnosis (ASCH) or the Society for Clinical and Experimental Hypnosis. To be a member of either of these organizations, a hypnotherapist must have a doctorate level degree in medicine, dentistry, or psychology, or a master’s degree in nursing, social work, psychology, or marital/family therapy plus a specific number of hours of approved training in hypnotherapy. In some cases, accredited, doctoral-level practitioners of alternative health care, such traditional Chinese medicine, may also be approved for membership. Of course, in addition to looking at qualifications, you should also find a hypnotherapist with whom you feel confident and comfortable in a therapeutic relationship.