Other than the smell of alcohol, for a long time my biggest trigger was Friday night. Actually any night, "work day is over and it's time to drink", but especially Friday night and the start of the weekend, since that had been "drink time" for many, many years. That was where it was important for me to change up my routine and plan ahead - don't go straight home, don't go home the same old way or at the same old time, make immediate plans for what I'd do when I walked in the door, etc. That triggered feeling faded over time, but I had to work at it.