One way to teach this high self value is to have a child believe that not only do their relatives, friends, teachers and neighbors think they are wonderful, but also that the universe thinks they are wonderful.
Religious institutions know a great deal about teaching spirituality.
It is good to have a child participate in a church, synagogue or mosque. Adults who mediate or pray have a stronger immune system, heal faster and have lower blood pressure. It also seems that if a teenager thinks the Universe is on his side then drugs, alcohol, inappropriate sex, gambling, violence and other escapist behavior is less attractive. I recommend teaching all children how to meditate. If you are religious, you can do it within a religious tradition.