十二步项目是一个通过一套规定指导原则的行为课程来挽回（治疗）上瘾，强迫症，和其他行为习惯问题的项目。这个项目是由一个名为匿名酗酒者（AA）的组织发起的，本来是作为一个治疗酗酒习惯的方法。

A twelve-step program is a set of guiding principles outlining a course of action for recovery from addiction, compulsion, or other behavioral problems. Originally proposed by Alcoholics Anonymous (AA) as a method of recovery from alcoholism, the Twelve Steps were first published in the 1939 book Alcoholics Anonymous: The Story of How More Than One Hundred Men Have Recovered from Alcoholism. The method was adapted and became the foundation of other twelve-step programs.