I never had a problem quitting drinking. (Not starting again, now, that was another story.)
Something stressful might happen, or I’d have some uncomfortable feeling, and my immediate reaction was “f*ck it.”
I’d be days, weeks, months, even (once) years sober, and be ready to throw it away and maybe try quitting again when I was more in the mood.
Change is uncomfortable. Navigating waters without a long used coping mechanism is hard. But it doesn’t get easier (!!) by delaying again, and it’s so, so worth it.