I did the same as you about a year ago. Drank myself to oblivion because of a humiliating relationship breakup. I numbed myself with alcohol but it made everything worse. Instead of thinking rationally and clearly about the issues, I became even more depressed and anxious and did things I wouldn't have done sober, like send abusive texts and threaten violence to her ex husband who was trying to get back with her the whole time we were together. (I'm not a violent person at all, even when drunk).
I'm learning that the problems are srill going to be there in life, but actually it's easier to deal with them sober than it Is drunk. It really is. When you wake up hungover, the problems will still be there but you'll feel even worse than you did.