I had lots or regrets about things I had done in the past while drunk.
The best thing to do is not fall into that cycle where you drink to forget things you did,only to do more things you'll regret.
It's a terrible cycle and I was caught in that for a while.
Once you get some sobriety behind you and the anxiety starts to lift it gets much better.
Use this site as much as possible. There's always somebody here to chat with as it's world wide. It sure helped me. I was in a pretty rough place over 8 months ago.
And now I wake every day ready to take on whatever happens with a clear head.