When Sarah applied to the Yale physicians assistant program and the admissions panel asked why they should admit her, she replied, "Because I'm going to change the world some day." After more than a decade of practicing medicine and encountering the medical world herself as a cancer patient, she still wanted to change the world through medicine. She optimistically raised funds to serve without pay in a mission hospital in one of the world's poorest countries, only to struggle daily with death and shocking diseases, many of which had simple, but unavailable cures. And, in a harrowing bout with malaria, she nearly succumbed herself. As she explores both her motivation and the mission, she ponders how to make the world "well."