Another thing that might help: Going car-free.
Last week I did an experiment where I voluntarily stopped using my car. When I went grocery shopping I found that my food choices suddenly became far more important and I ended up choosing mainly proteins, and for my first time ever only bought one carb. On top of that, the food was only a 3 day supply... and that was 3 days ago. So once again I'm out of food and haven't been able to eat much today as a result! Heh.