Dr. David Weill shares his story about quitting his job—at the prime of his career—as the Director of the Heart-Lung Transplant Program at Stanford. Wanting more balance and a more contemplative life, he says, “I had a real sense that it was time to go.” He now writes in the mornings and does consulting work with transplant hospitals in the afternoons. His new novel about a transplant doctor, All That Really Matters, just came out.