Have you ever tried to stop yourself from doing something, but were unable to summon up the willpower? A new study finds your brain might be working against your best intentions, and scientists think they might know what could help you unlock your better self.We’ve all seen it happen. Some well-intentioned co-worker stops at the bakery and brings the most delicious looking doughnuts to your meeting. Intellectually, you know doughnuts are among the foods you are not supposed to eat. They sit in front of you and they smell delicious. It’s like they’re calling out your name. By the end of the meeting, you have sliced off a piece of the German chocolate. OK, maybe two. Then, a slice of the cinnamon twist, and a slice of the red velvet. You may even have tried the salted caramel bacon, and you don’t even really like bacon.