Helen Roseveare, a medical missionary in Africa, was the only doctor in a large hospital. There were constant interruptions and shortages, and she was becoming increasingly impatient and irritable with everyone around her. Finally, one of the African pastors insisted, "Helen, please come with me." He drove Helen to his humble house and told her that she was going to have a retreat—two days of silence and solitude. She was to pray until her attitude adjusted.

All night and the next day she struggled; she prayed, but her prayers seemed to bounce off the ceiling. Late on Sunday night, she sat beside the pastor around a little campfire. Humbly, almost desperately, she confessed that she was stuck. With his bare toe, the pastor drew a long straight line on the dusty ground. "That is the problem, Helen: there is too much 'I' in your service." He gave her a suggestion: "I have noticed that quite often, you take a coffee break and hold the hot coffee in your hands waiting for it to cool." Then he drew another line across the first one. "Helen, from now on, as the coffee cools, ask God, 'Lord, cross out the "I" and make me more like you.'" In the dust of that African ground, where a cross had formed, Helen Roseveare learned the master principle of Jesus: freedom comes through service, and service comes by releasing our ego.