Melanie Beattie's book, Codependent No More, started me on the path. Also, therapy and Adult Children of Alcoholic Parents were so good and are good.
I had a codependency relapse recently due to 'empty nesting' with one of my five children as an active heroin addict...and it was awful...but am back on track with this site...and also naranon and Melanie's book and some other steps.
It will help...keep coming back.