This is the use of trance to make changes at the unconscious level. Hypnosis has been used to produce unconscious change with clients since 1843.
When you consider that most of your day is spent in varying degrees of trance, and that advertising and television make use of trance induction extensively, it would make sense to use what already occurs in order to achieve substantial change.
I am trained and certified as a Hypnotherapist by NLP Coaching CC and the American Board of Hypnotherapy. Since Hypnosis may be used during your session, for your safety you should make sure that you are totally wide awake before driving or doing any other activity that may require concentration.