There are many myths about hypnosis, primarily due to stage hypnotist. One of the greatest myths is having the ability to control another person. It is not possible for anyone to control you. In fact, it is important for you develop a trust with your therapist and realize how much in control you are, so that you can let go and move deeper into a relaxed state.
Most of your actions, responses, and confidence, come from the strength or weakness of your subconscious part of your mind which then guides your conscious mind during any given situation.