A growth mindset is an essential tool for a resilient, successful child. Teach them how to develop one wit these leading questions, to be answered in a family activity, a journal, or any other way your children like to express themselves!
Not just happiness. I hate when people say happiness, when they mean many other things. Happiness isn't everything; this experiment is still true for those who realize that seeking only happiness is shallow. Help others, and you gain much deeper things.