Teach How to React to Criticism
In their "Charge Up Your Confidence Tool Kit For Kids," Reiffel and Ross include a tool called "4,999 pieces." A child should think of his confidence as a five-thousand piece puzzle. When he receives criticism, he should realize that it only affects one piece of the puzzle, but that there are still 4,999 pieces that he can feel proud of. Encourage him by making him aware that if someone is giving him constructive criticism, it means that person believes he's capable of great things.