Successful treatment of addictive behaviors is difficult because of the complexity of relevant contributing variables. Restricted environmental stimulation therapy (REST) is offered as a useful, flexible tool that can facilitate change in addictive variables at each level of complexity, from habitual acts through attitudes to self-concept and spirituality. The nature of REST is discussed in terms of processes and effects. Basically two processes, refocusing and rebalancing, contribute to the various physical and mental effects of restricted environmental stimulation. These effects include profound relaxation, relief from pain, and a shift in consciousness to a state that is more introspective, less defensive, and more rec