It was a Words with Friends chat that first gave Megan Phelps-Roper pause. People have a marked tendency to cling to past investments, whether financial, social, or emotional—even when it becomes ...

Ever stayed in a terrible movie just because you already paid for the ticket? Or clung to a failing relationship because of “all the years you’ve put in”? If so, congratulations—you’ve met the sunk ...

A neighbor and I were commiserating over a 6-foot distance about our recent losses. He said his retirement portfolio was way down, but “it’s not a loss until you cash it out.” This is a common mistake ...