Walk or eat?

I had a half a turkey sandwich with cranberry sauce for lunch, but I was hungry at 4:00pm. I can't eat then. It'll ruin my dinner. I wanted to eat some cookies or Nestle's Krackle bars. I used raw willpower and instead of munching I went for a walk - 25 minutes. My husband came with me and we even jogged a bit. I felt so much better afterward and my legs felt overall good. It was cold out too. It's hard to get motivated to go outside when it's so cold