Hi VN.
I'm a big advocate of having a plan. They can start very simply:
The next time I feel like drinking I will ________ instead.
You can fill in the blank with anything you want, and then you have a plan. You don't have to worry about the next time you feel like drinking (which will come) because you already know what you are going to do when it happens. You won't
re-act to it. You have
pro-actively made a plan.
I, too, made the commitment many times to never drink again only to find myself with a drink in my hands days or weeks later. I had several sessions with a Cognitive Behavioral Therapist who had some good insights for me. I found it very helpful. Maybe you could also look into that.
Best of Luck on Your Journey.