Good stuff, thank you! When I first learned of Rational Recovery, I introduced my therapist to its principles. He's all about ACT, and he was very attracted to the RR model. Now when we meet (about once every month), we find ACT/RR common ground. Like you, I drank to avoid feelings of boredom, depression, and anxiety, and like you, ACT redirects my thought processes from avoidance of these feelings to acceptance, and the crux of my therapeutic process regards mindfulness and learning, as you said, to just sit with or be with difficult feelings. They go away.