What do West Point graduates and National Spelling Bee winners have in common? They're some of the grittiest people out there, says psychologist Angela Duckworth.
Duckworth, a professor of psychology at the University of Pennsylvania and a MacArthur "Genius" fellow, spent years analyzing what it takes to be successful. In her recent book, "Grit: The Power of Passion and Perseverance," she argues that talent alone isn't enough; you also have to have grit — a mental toughness that helps you persevere even in the face of obstacles.
In her book, Duckworth outlines four characteristics that gritty people share.