Well, you can always think of the 30 lbs you have lost so far!!!
I know its a tough road not to use food as a cushion but I know you can do it. So when you get home, make something nice, healthy and filling. So when you are done, you will be too stuffed to think of eating anything else.
Another thing that helps me when I'm craving food, is to write my feelings at that moment. It's always good to get your feelings out there, so you don't use food as a way of comforting yourself I know its hard, trust me). But this really helps me.
Either way, you are defintely on the right track and I know you well be OK.