Whether we like to admit it or not, we all have some sort of routine which we unconsciously follow, altering it slightly from time to time as circumstances demand. If you had an addiction odds are somehow it was part of this routine. So once you stop using a substance how do you fill the time which was dedicated to . . . that? To help keep your mind off drugs you should consider disrupting the routine. Do things differently. Your mind will readjust to "no drugs at a specific time" and might help you embrace your resolve not to touch drugs more tightly.