We’ve all been asked that question, or some version of it, by our friends, colleagues, and/or spouses. At some point in their career, many people ask it of themselves at 3:00 in the morning, staring up at the ceiling. Very often, the answer is less than boundless enthusiasm. In people’s day-to-day lives, it somehow seems that many of us dwell on the negative, whether because of unfulfilled ambition, jealousy of others, or feelings of being unappreciated for our contributions. It doesn’t take a genius to realize that those kinds of feelings, whatever their ultimate cause, are not conducive to doing your best work, or getting the most out of life. It is equally obvious that working with people who feel this way about their job is not a recipe for your own success, either.