In high-performance environments, mental resilience is a competitive advantage. In my work as a neuroscientist , as the parent of two young children, and in my athletic endeavors — ballet, yoga, five triathlons and two half-marathons and counting — this is something that I constantly think about. All of these experiences have taught me that I can't simply grind my way into a sharp mind . But I can build it by returning to the same simple practices, day after day. Here's what that looks like in