My father is an alcoholic and he regularly goes out drinking with friends. Whenever he does I just get super anxious, thinking if he will be able to drive home safely, hoping he doesn't get into fight etc. There has been multiple instances of him being so intoxicated that he wasn't able to talk properly or getting into fight/argument with family for petty reasons. And this all makes me really anxious, thinking about what's going to happen tonight. I can't enjoy/sleep/ focus on work whenever he is out, just sitting on bed scared. 

How do I deal with this anxiety? Talking to him about this is not an option.