We all like to think we get a clean slate when the year changes at midnight. We make goals and hope to see things differently. But if we knew a bit more about the neural mechanisms behind goal setting and our sense or rewards, we might approach our resolutions with a bit more strategy, ensuring our success rather than setting ourselves up for disappointment..

We've heard and read many catchy stories of the "love molecule" and how oxytocin promotes social bonding. But what we don't hear often is that extreme bonding also creates judgment, racism and ethnocentrism.