There is no true clear cut between fact and fiction when it comes to hypnosis, and whether or not it is the only hypothesis. One good thing that hypnosis has been proven helpful for is the removal of habit disorders. In this Youtube video, Denise Richards visits a famous hypnotist, Kevin Stone, wishing to fix her cussing problem. He has Denise close her eyes and visualize herself controlling her cussing. Her tells her to picture herself in an out of body sort of way, and has her visualize herself carrying on the same conversations without the cuss words. When Denise awakens she's hopeful that this technique works and expresses that she feels very relaxed.
Hypnosis is defined as a set of techniques that provides people with suggestions for alterations in their perceptions, thoughts, feelings, and behaviors. This is exactly what Kevin Stone performs on Denise. I'm hesitant to use the word performs though because the way the definition phrases hypnosis as a "set of techniques" makes me feel as if Stone simply told Denise an idea of how to fix her cussing habit. The idea of hypnosis, especially in Denise's case, makes me question the scientific principle of ruling out rival hypotheses. Can the resolution to Denise's cussing problem be solved via a different solution? It doesn't seem likely that the only way to stop her from cussing is to put her in a trance like state and tell her the same things you could tell her while she is wide awake.