Grit isn’t talent or luck. Grit isn’t how intensely, for the moment, you want something. Instead, grit is about having what some researchers call an “ultimate concern,” a goal you care about so much that it organizes and gives meaning to almost everything you do. And grit is holding steadfast to that goal. Even when you fall down. Even when you screw up. Even when progress toward that goal is halting or slow. Talent and luck matter to success. But talent and luck are no guarantee of grit.