What should I do about the fact that I drink alcohol almost daily now because studying was frustrating me?
Why is it that get frustrated by studying?
I have to deal with lousy, non-motivating professors who don't teach me anything useful
It sounds like maybe you're not applying your studies to the real world. It's very bad to drink almost daily. It could damage your liver and kill you.
I will drink anyways.
You should at least consider doing it in moderation. You may become an alcoholic and then you'll have a lot bigger problems to worry about than studying.