Welcome to SR, Phoof! I think AVRT can be a helpful technique and for some people may be enough in itself.
SMART Recovery branched off from RR and offers a variety of cognitive tools for recovery as well as online meetings, forums, and f2f meetings in some areas.
LifeRing is a secular support organization that encourages self-empowerment in recovery through the creation of a personalized recovery program or toolbox and peer support. They also have forums, online meetings, and f2f meetings in some areas. I've found both websites to be informative and helpful to my recovery.