I find my biggest problem as probably with many is stopping when you are full. Decades of eating "what's on the plate" is a difficult habit to break and I find that even now I probably eat too much at once.

Aside from this, I nosh at work too and I try to bring "small" satisfying "noshing treats" like celery with cream cheese, a few cubes of cheese, 2 oz of pepperoni slices...etc.

At home I nosh less I noticed.