As a manager, leading in this era of change, urgency, and accountability requires so much. You need the energy to be fully present even as you’re fretting about the 72 emails piling up in your in-box. You need the patience to be empathetic when facing resistance from your employees. You need the wherewithal to be creative instead of defaulting to tried-and-true approaches. You need the self-control to be open and vulnerable without losing your team’s confidence. And you need the endurance to be present, patient, creative, and controlled day after day and week after week. In sum, you need tremendous fortitude.