Turning off your lights

I once read that if you turned your kitchen lights off after you ate, you'd be less likely to go to the kitchen for a late night snack. They said it's because your brain sees the kitchen as "closed" and therefore you aren't hungry. I have been trying this lately and it's amazing how it has worked for me! I don't go into the kitchen when the lights are off and it kind of irritates me when my husband goes to get something out of the fridge. I see the kitchen as closed, so I feel he should be too. It's weird, but it really does irritate me when he eats after I have closed the kitchen. Maybe you might want to try it too?