Disappointed Ninja: a Social, Emotional Children’s Book about Good Sportsmanship and Dealing with Disappointment Is your child a sore loser? Does he or she scream or get angry when losing? Disappointment is a natural emotion we all experience. While it never feels good, it's not an emotion to avoid. Children with no experience solving life’s smaller setbacks have a much harder time when they’re faced with larger ones. When we teach our children to see stumbling blocks as opportunities to improve and grow, we increase their mental toughness. Handling disappointment includes being a good sport. Good sportsmanship is one of the life lessons that children can learn while young. In this story, Disappointed Ninja becomes disappointed and learns how to display good sportsmanship skills: If you lose, don't quit or make up excuses. Learn from mistakes and try again. Always give your best. If someone else makes a mistake, remain encouraging and avoid criticizing. Show respect for yourself, your team, and the opponent.