I’ll sleep when I’m dead. That used to be my mantra. It felt concordant with a common mindset—one in which we see burning the candle at both ends as a sign of determination and unwavering focus. We celebrate folks who work around the clock to get things done, and we overlook the fact that perhaps they have neglected their families, health, and mental well-being to do so. But I went from being that person, the one who would tattoo her workout posts with the hashtag #NoDaysOff (completely ...