I agree with Mark Dub.
I had to stop thinking about it and...just do it.
I had to down to as simple as 'do not EVER raise a glass of alcohol to your lips - and you'll be ok.'
Not easy, mind...but simple.
Hour by hour, day by day...keeping that commitment.
Not just about stubbornness but focus...doing whatever I needed to stay committed to that goal of not drinking.
It was the only way I'd have ever gotten sober, and stayed that way.
I was way too 'smart' for my own good.
D