Most humans crave order and meaning in their existence, to deal with the terrifying uncertainty of the world. For much of history, this function was served by religion, with rules handed down by gods and supernatural surveillance of behavior. Despite differences in the beliefs, all major religions drew on common themes, and the need for rules and order was universal. The ubiquity of this suggests something biological or evolutionary.
The developed world is moving to greater secularism, as a result of: scientific explanations of the world’s uncertainty; critical thinking around religion and the logical impracticality of all religions being true at once; and moral relativism.
But take away religion, and a void remains. There is no scientific code of ethics that inherited the stabilizing role of religion. In the absence of clear rules and a moral compass, people are prone to nihilism, existential angst, and misery.
In 12 Rules for Life, Peterson argues that there is a right and wrong way to conduct your life. In contrast, he rejects the ambiguity of moral relativism, the idea that good and evil are merely matters of subjective opinion and that every belief has its own truth. Moral relativism tolerates all ideas to avoid being “judgmental,” and prevents adults from telling young people how to live. It also rejects thousands of years of development of virtue and how to live properly.
In this vacuum of guidance on how to live, many are drawn to group-centered belief (like political or national allegiance) or ideologies instead, because it gives them identity, purpose, and a shared code of conduct. It simplifies the world.
As a solution, Peterson focuses on individual responsibility. The central tenets are:
That this book has hit such a chord support the first point, that most people crave order and structure. The rest of the book clarifies the 12 Rules for Life, with themes of individual responsibility, being truthful to yourself, and defining your own meaning for life.