Research indicates that Restricted Environmental Stimulation Technique (REST) can be an efficacious intervention for self-abusive behavior. A wide range of behaviors has been examined, including: over-eating, hypertension, drug abuse, and tension headaches. The present study is an attempt to produce smoking cessation or reduction in persons who smoke cigarettes heavily but are motivated to stop. Isolation-floatation REST Is used as an intervention, coupled with messages designed to shape attitudinal change. Subjects were followed up for twelve months post-intervention. Reduction at 12 month follow-up compares favorably with other interventional techniques, and floats of longer duration appear to be a more effective intervention than shorter floats. Messages did not add to effects found.