I have 7 years sober. I put it down to a solid daily routine of self care in the form of set mealtimes, healthy food, lots of fluids, sensible exercise, set bedtime, working my programs, good balance of being busy but making sure relaxation time too. Also knowing there is NEVER a valid reason for me to drink.
I changed my life style completely. Removed certain people, stopped going to certain places.
That's off the top of my head, is probably a lot more.