Welcome to SR
That's a lot to digest. I think it's a good thing you're trying to conquer all this sober. I have no hands on experience with dealing with these kinds of events, so I am reluctant to give you advice, especially since you're already in the hands of professionals.
What benefits me greatly is excersize. Cardio excersize to be more precise. Long bike rides. They put me in a sort of a trance. I am able to think about stuff with a certain distance and everything just seems to make sense. But I need to get in an hour or more before that starts to kick in. Afterwards I feel very content, maybe I am too tired to think too much then. I can imagine the same thing happening on long hikes.