There is no single effective treatment for addiction and any facility or treatment professional who claims otherwise needs to be given a wide berth. Addiction arises from a multitude of biological, psychological, social and spiritual reasons and can vary in nature and severity from person to person. Effective treatment needs to take into account what is driving and maintaining the addiction for each person individually, and use interventions which specifically target the underlying problems. In effect, you need to treat the person not just the addiction.
Alcohol and drug abuse is the source of many problems for those who are engaged in addictive behaviours. One of the earliest casualties from substance abuse will be intimacy. It is very difficult for people to abuse mind-altering substances on a regular basis and maintain healthy relationships. As a person falls deeper and deeper into addiction, it will completely take over their life and there will be little room for anyone else. As people become more disconnected from their true feelings and needs, due to suppression by substances, they become less able to communicate them in their relationships, which in turn become more superficial and less gratifying.