I just drink untill I can't think.
(just joking)
This would have been also my answert, but as it happens I can think also when I drink, no matter how much I drink. So I have to enjoy my crypto regret in all its glory.
Lol. One thing about drinking anyway is you will still at some point get sober, come back to face the reality and still enter that world of regret if you still want to, and then, you are back to square one.
However, I have always have this mindset that regret would not change a thing as we cannot change the past but can only amend the future by learning from the things we did wrongly and that is what makes us better. At least, that will even give you an edge over others that are just starting to gain the experience afresh.
Drinking up wont really solve up problem but somehow would ease the pain or stress momentarily but same as you said once its done it cant really turned back which we would really face the reality after we drink.We cant avoid it thats why some people do drink just to ease the pain. Handling our regrets can be hard but it just depends on how sensible we are if we do accept our mistakes and learned from those things and we might able to avoid it in next time encounter.