If I were you, I'd say "screw this" to expensive hypnotherapy and start drinking more water. It does wonders to control cravings. I'm an amateur hypnotist, and I've found that it works best for insomnia, not weight loss. If you insist on this as a 'magic bullet,' which I think would be a bad idea, do insist that the charlatan teach you a self-hypnosis ritual (counting backward from ten, reciting some uncommon piece of text, or something. When I need to make myself sleep, I picture unhooking my muscles like rubber bands). Hypnosis is most effective while you're in a trance state (from which it's easy to go to sleep), not afterward.