Welcome Kopfan
You have made a good assessment of your situation
But my mind keeps playing tricks on me. Why is it doing this?
Because you are addicted to alcohol and you are not feeding the addiction - it will drive you to distraction. Even if you have a mild physical withdrawal there will be a lot of mental activity. It will get easier but does not disappear- it's the nature of the problem. I found doing the short course at "Rational Recovery" (free) on AVRT (addictive voice recognition training) extremely useful ( if you avoid all the anti AA stuff).
With all the other stuff take it step by step , day by day-
Keep posting