I've lost about 15kg in the last year. (109 to 95 or so). While I'm not explicitly counting calories, I've definitely scaled back snacks, desserts, and "eat until I'm fed up" lunches.

I wonder if it's worthwhile to find some compelling distraction-- the equivalent of "I'm grudgingly coming to the table and slamming the least amount of food possible so I can get back to my task" sort of thing. If I'm at my desk away from food sources, I'm not consuming calories.