Dr. Vivek Murthy joins David to talk candidly about why mental health is “the defining public-health issue of our time,” and how leaders can protect their own battery and their teams’ well-being in a chaotic year. He lays out practical habits that fill (sleep, movement, meditation, time with loved ones) vs. drain (doom-scrolling, excess news, the wrong meetings) our “emotional tank,” and shares how modeling boundaries at work turns minutes of true presence into real impact. Murthy connects sleep to resilience (including his own shift from “badge-of-honor” sleep loss to disciplined routines), explains why loneliness is a health epidemic with physical consequences, and offers a simple prescription for volatile times: rebuild community through relationships, purpose, and service.