In recent weeks we’ve considered happiness from a variety of perspectives: what makes us happy, what doesn’t, and why we’re so bad at distinguishing between the two. Sometimes the insights offered have been surprising: turns out that getting more stuff or making loads of money doesn’t make us happy, while giving money away does. In this TEDTalk, Dan Pink — author of one of my favorites books in recent years, A Whole New Mind: Why Right-Brainers Will Rule the Future — offers another surprise: contrary to popular wisdom, we are rarely motivated or made happy by the traditional rewards and carrots of...