Are evenings hard for you in terms of snacking?

Many of my patients and friends tell me that after dinner is their hardest time of day in terms of wanting to eat even when they are not hungry. I know this is my most difficult challenge in eating consciously. If I've had a satisfying dinner, and am NOT hungry, I shouldn't want any more food, right? Many evenings that's just not the case. I really enjoy a (small) bowl of frozen yogurt and often that's enough. But some evenings I just want to keep eating! This is very frustrating. I feel best when I eat when I'm hungry and stop when I'm full.