Hypnosis works by reprogramming the subconscious mind. Usually this part of mind runs on autopilot. Raising awareness of mindless habits is always the first step. After heightened awareness of bad habits is achieved, the hypnotherapy helps shift and change choices, beliefs and behaviors surrounding those habits. It is easy to do and it is non-invasive. Hypnotherapy for smoking cessation, weight loss, and stress management is especially effective and successful.
You might be surprised to learn that hypnotherapy is approved by the American Medical Association. It is not an "alternative" therapy, it is a complementary therapy under the auspices of Western medicine. I work frequently with medical doctors in Austin, Texas, to assist their patients in healing faster through hypnosis.