One thing we all want as children and never stop wanting is to be loved and accepted, and to have our parents feel good about what we do. This is how self-esteem gets established. When your interactions with your child make him feel good about himself, he will, in turn, learn to treat himself this very same way. This does not mean that you have to incongruently compliment your child for a great effort after they have just performed miserably. In this situation being empathic and sensitive to his feelings is what's called for.
Self esteem makes the world go round.
Make your child feel good about himself and you've given him a gift that lasts a lifetime. Do not interact with your child in a way that assaults his self-esteem by degrading, embarrassing or humiliating him. The most successful people in and out of sports do two things differently than everyone else. First,, they are more willing to take risks and therefore fail more frequently. Second, they use their failures in a positive way as a source of motivation and feedback to improve.