In medical school, Matt McCarthy dreamed of being a different kind of doctor-the sort of mythical, unflappable physician who could reach unreachable patients. But when a new admission to the critical care unit almost died his first night on call, he found himself scrambling. Visions of mastery quickly gave way to hopes of simply surviving hospital life, where confidence was hard to come by and no amount of med school training could dispel the terror of facing actual patients.