In the process of active addiction, people suffering from substance use disorder lose material possessions, relationships with people, and other things that were once very important to them. As part of drug and alcohol rehab, you will strive to recover those things through acknowledging mistakes, fully immersing yourself in treatment, and working hard to make the necessary changes to beat the disease of addiction. Drug addiction often changes a person's behaviour, which affects all aspects of his or her life, including work and relationships. In residential rehab, patients do their best to regain their normal lives in a safe and healthy way.