In the last year of my serious drinking, I too was plagued by feelings of shame, remorse and guilt. I felt worthless and sh&*tty. Heck, I drank expensive substances with alcohol even though I live less than a block away from liquor stores. Why? Because my self worth was short, I felt I deserved to feel bad and didn't even deserve real alcohol. Alcohol sure screws with the mind.
All my slips have been accompanied by after-feelings of WTF was I thinking???
Forgot to add, you will feel better about yourself once the alcohol leaves your system. I can attest to that