You're already ahead of the game because you are able to see what is happening.

When I'm like that I try to just damage control. Like don't talk to people (like the significant other), and tell him not to bring up anything to you. Don't make big decisions. Don't go to places where you get overstimulated. Etc. that is what I do. But it sucks. Big time. I hope you get some piece. The drinking thing is hard for me too. It is just so counter intuitive when there is something in your reach that you know will help you feel better. I know I know.