I totally get your sentiment, I too am in shidduchim and have also thought word for word like you.
I'm trying to use marriage as a push to finally overcome this for once and for all! I'm currently on day 7 of what I genuinely hope will get me to at least 90 (and hopefully sobriety for life - I fully, 100% believe that it's possible)
Also, like you said one beautiful day at a time - oBdaat.
Every day is a fresh start and every day has its own challenges, but we must remember that the challenges of today are what we can look back at tomorrow and say "wow I actually did it!"
That's the beauty of oBdaat - every day is a new beginning, a fresh start of sorts, an opportunity to change the world little by little, day by day.
you can pm me if your interested in chatting
Hatzlacha rabba!!