I don't count calouries - ever. It doesn't work for me in any way. I always know if I'm doing good or bad.
When I am strong I try to fast.
When I'm a bit weaker I try to eat just a little piece of something that satisfies me for the moment (usually unhealthy stuff - a piece of chocolate, a glass of liqueur... several days ago I made myself ten pieces of french fries for the dinner :-)).
And when I'm really weak I binge so much that it's better not to know any numbers.
Diet/fasting should be in one's body, mind and soul. I can't imagine having it in a calorie counter. After all - my body reacts differently every single day. Sometimes it's very generous, sometimes just too cruel. Just as the whole journey.