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. You’re always keeping them in mind, even if they are not at the top of your mind. Often, you follow the habits of your culture without thinking, without questioning, and sometimes without remembering.