Recent research by Northwestern University psychologists Daniel Molden and Chin Ming Hui demonstrates an effective way to be sure you are making the best decisions when things go awry: focus on what you have to gain by moving on, rather than what you have to lose. When people think about goals in terms of potential gain, that’s a “promotion focus,”which makes them more comfortable making mistakes and accepting losses. When people adopt a “prevention focus,” they think about goals in terms of what they could lose if they don’t succeed, so they become more sensitive to sunk costs. This is the focus people usually adopt, if unconsciously, when deciding whether or not to walk away. It usually tells us not to walk away, even when we should.