The study aims to investigate how to stop using heroin without replacing heroin with use of other opioid preparations and without receiving substitution treatment with the opioid preparations methadone or buprenorphine. The research review shows that it is possible to quit heroin addiction without substitution treatment, but it is difficult to prove that certain specific treatment methods create this result. The empirical material consists of in-depth interviews with ten people who share the experience of being addicted to heroin and having stopped using heroin without receiving substitution therapy. As a theoretical point of view, a synthesis of several sociological and social psychological theories and concepts of analysis is used to explain the relationship between human behavior and the social context in which human beings belong and relate. The study shows that a successful recovery from heroin addiction involves secondary socialization into social communities organized around phenomenas other than heroin use, which enables the former heroin user to refrain from heroin and other opioid use. The study also shows that an important component of the recovery process is, especially during the first phase of the recovery process, developing an overwhelming involvement to some type of pursuit, and that people who when they used heroin lacked any sort of bridging social capital, are able to create such after they stopped using heroin.