Roughly 37% of people treated for illicit drug use had relapsed within three months of leaving an inpatient stay, according to a Norwegian follow-up study of patients discharged from specialized treatment centers. That short window shows where recovery is often won or lost: the weeks after discharge. It is the gap rehab for relapse prevention is built to close. Instead of treating sobriety as a finish line, this approach treats it as a skill set you practice and sharpen. Below, we explain how rehab for relapse prevention works, where the model came from, the theory behind it, what a typical week looks like, and what the research shows.