Yes, I've had three sleep studies done in a five year span of time (and they're pretty uncomfortable). None of them indicated I needed a C-PAP machine, and once that was determined, the Sleep Center was out of options or ideas about what to do. Since then, the doctor I see for Restless Legs (and it appears that I have developed insomnia alongside RLS as well) had me wear an sort of device on one of my fingers through the night to measure my oxygen (and that was much easier to get a 'normal' night's sleep), and it came out that a drop in my oxygen level is not my problem at night. I've wondered about hypnosis from a therapist, but I cannot find someone who is certified as legitimate in my immediate area. Thanks for the sleep hypnosis link - I'm going to check that out.