Hungry or hungry out of habit?

I'm trying to decide which one I am.  My stomach isn't growling so it must be habit of just eating all the time.  I haven't eaten dinner yet but I probably will around 9:30 since I'm at work.  I'm going to have some shrimp and melba rounds, which is actually really good together!  I also made homemade tomato soup earlier today and will have that for a snack later tonight.  I brought an apple as well to snack on at some point.  Hopefully I'll make it without being too hungry.  I'm ready for some coffee!!