Buleva, I am also P.Eng. and sober now for well over a year. That routine of mine was similar to yours, except I never started until after quitting time, but I sure wasn't much good after 6 for anything. Still, in those six hours before I passed out, I could still pound back a dozen doubles. Every day.
But that is history now. I checked out a number of options when I decided I had had enough, including AA. I stayed with a couple of other ideas for the long term though, SoberRecovery.com and AVRT (Rational Recovery).
The AVRT appealed to me because it made sense, it's a logical construct. You might feel the same. Lots of discussion of AVRT and other REBT / CBT ideas like SMART on the Secular Connections forum.
You are only too weak to fix it yourself if you believe that is a true statement. What can happen if you believe that you can quit? What can you achieve if you believe in yourself?