Timing:When you feel hungry
Close your eyes. Take three deep breaths. Now rate how hungry you are from a scale of 1-10. One being not at all and ten meaning you are actually physically very hungry and in need of some food. With this assessment you can do one of the above tricks to avoid overeating if it is a small number or realize it is time to actually have a snack or meal.
It is around 6. I will bear it for another hour - by the time it will be tea time.
I actually assessed my hunger before I went for the bath.. It was 2 out of 10.