I just realized that I no longer tally my daily calories in my head regularly. Considering I've been doing this reflexively for about 5 years, this is a big deal. (I will say that my arithmetic skills are off the chain thanks to this habit, but the depletion of my already tenuous sanity definitely tipped the scales -- haha -- toward an ultimately negative behavior.)
When I'm having days where I'm panicking about the amount I've eaten, I sometimes calculate to reassure myself that I've eaten a normal amount as opposed to OMG THE ENTIRE WORLD, but still. Pretttttty big deal.