It was early 2013, after a particularly stressful year, that I was at a friend’s house passing the time of day. As I got ready to leave, my friend looked strangely at the side of my head and then swooped in closer. “Amanda! You have a gray hair!” To my chagrin, I realized she was right. At the time, I was a mere twenty-seven years old—in my opinion, far too young for gray hairs. Since