There is increasingly more self-help materials to supplement all of this and aid your recovery. I can't remember any, except for bits and pieces. Most sex addicts have experienced some level of abuse or trauma as children or teens. I would not assume that all games of dominance play are Sex Addiction. But, in contrast, it often is a symptom of people's addiction.
Different people use slightly differing terms that mean basically the same thing.
There is some dispute in the professional community as to whether this is an addiction or compulsion, according to guidelines placed in the APA's Diagnostic and Statistical manual. They do a lot of work with Trauma Recovery. I'm assuming that isn't so with sex addiction, that it's more of a psychological issue. Although I doubt if there is a Sex Addiction gene, it may be fair to guess that some people are neurologically predisposed to sexual addiction. These are Selective Seretonin Reuptake Inhibitors, such as Paxil, Zoloft, Prozac.