We don’t choose our earliest habits, we imitate them. We follow the script handed down by our friends and family, our church or school, our local community and society at large. Each of these cultures and groups comes with its own set of expectations and standards—when and whether to get married, how many children to have, which holidays to celebrate, how much money to spend on your child’s birthday party. In many ways, these social norms are the invisible rules that guide your behavior each day.