Drinking does cause remorse in our lives. I would try to get over the remorse, but if you really want to be sober then you have to go to all lengths. If SR is not helping you remain sober then you should (in my opinion) search for another form of recovery along with SR. A face to face group that could give you phone numbers of people to call might be helpful. Therapists have been known to help. There's lots of different ways.
You definitely can make this the last time you feel ashamed of your behavior. I wish you well.