Paradoxically, the big moments—packed with triggers, stress, raw emotions, high stakes, and thus high potential for disaster—are easy to handle. When successful people know it’s showtime, they prepare to put on a show. It’s the little moments that trigger some of our most outsized and unproductive responses: The slow line at the coffee shop, the second cousin who asks why you’re still single, the neighbor who doesn’t pick up after his dog,

