My grandmother had a pretty serious drinking problem but quit on her own years ago. My cousin has been sober for 7 years.
Also....There is a very strong link between abuse or trauma (as a child OR adult) and addiction. It creates shame and fear. In the book I am reading the doctor who wrote it says that shame and fear are the main causes of addiction for women. Not sure about men because I'm a woman.
I working on my shame and fear from my abusive childhood and it's really helping.