Children's irritating behaviour may give message about child's self regard. In this time you must listen to them severely, understand each other and then tell them what you make your point. For example, when your child says:"I'm so stupid, I can not make right anything." you should answer as "I know you think like that, but I am not agree with you. You need time to learn something, I know that you are talented. Remember how you repair your toy car. Everyone can not do that." Whatever the child gives reaction, the child should be induced on their talent.