Hiya RA30, good on you for resisting the party temptations in your own damned building, that's nuts.
You were talking about those musicians and how they can stay focused. I can tell you from personal experience, we go into the studio sober because those are the recordings that will land us jobs, but the field is littered with folks who couldn't resist the lures. One thing I'm finding in my recovery is that my music is an important means of addressing so many different feelings I have now that they aren't anesthetized.
You had talked about learning an instrument. I'd highly recommend it -- it provides focus and relief both.
Keep on keepin' on, sweetie.