Usually a terror at home and school, young David learns to turn his hateful actions into a life of understanding-and learns the importance of showing gratefulness, love, and happiness in everyday life-from a mysterious stranger.David, a young boy, struggles in life. He feels unhappy much of the time and takes his frustrations and sadness out on those at home and at school. Often in trouble, David acts out all the time and quickly becomes a headache for his parents,...