Half the battle at least is most likely in your head. If you bite into a sandwich with very negative thoughts (e.g. it's probably horrible/bad/diseased) then y

Half the battle at least is most likely in your head. If you bite into a sandwich with very negative thoughts (e.g. it's probably horrible/bad/diseased) then you'll most likely taste something much more different than if you had thought it was a normal delicious meal.