Two things that really helped me in early sobriety:
- Give yourself permission to be "impolite" if ever you get squirrely - and leave whatever situation, person, topic, or atmosphere is getting under your skin. Leave the room, leave the building, leave the town if necessary, but get yourself out of harms way.
- Always have your own transportation or a means to bail when away from home.
I only had to resort to that a couple of times, but just knowing it was an option made those first forays into the wider world possible, enjoyable, and safe.