Hi OnlyMe. A lot of quitting is admitting you have a problem. I think it sounds like you are still questioning it when you say:
Sometimes like right now the day after I drink I do not understand why I must feel so bad about it. In the past I never felt regret when I drank in excess.
Once we truly admit to ourselves we have a problem, I find it gets a lot easier. For me, one drink is too many and 100 not enough. I think you know in your heart you have a problem and you have had some sober time because of that. Trying it again and again doesn't make it any better, only worse. It is impossible to go back in time to
how it once was. If you are truly an alcoholic then you get one of two choices, drink and succumb to all that goes with it, or quit. I choose quitting.
Hugs and welcome.