My guess is that a lot of people don't really know themselves, or even have never known themselves, and that's why they're confused about their problems. And by "myself," I mean the part of my brain, because without my brain, we are nothing; Having a brain, but not understanding it, leaves us with a vague sense of life, and that life is often not what we want. Starting with the brain, we will "evolve" again by relearning ourselves. Human beings have become the highest creatures on the planet because of their brilliant brains. It is considered so precise and perfect that science and technology have yet to fully unravel its secrets. But it turns out to be imperfect and even problematic, and these problems are what make us feel incompetent and miserable. To understand this, we need to understand how the brain evolved. At first, there was no life on Earth. But billions of years ago, a few replicators appeared in the ancient oceans, and evolution led them to become single-celled organisms, and then to animals, plants, and microbes, and then to the branches of animals that led to primitive fish that filled the oceans. About 360 million years ago, they began to make inroads on land, and the Earth entered the age of reptiles. To adapt to life on land, reptiles developed the first "instinctive brain". The structure of the instinctual brain is very simple, with only one primitive reflex module, which allows reptiles to make quick instinctual responses to the environment, such as fight or flight when encountering danger, hunting prey when encountering prey, and pursuing the opposite sex when encountering a favorite. Reptiles have neither emotion nor reason, and the ability of their body temperature to change with the outside world prevents them from moving around in cold environments. But by relying on this simple instinctive reaction, they have not only survived, but some have survived into our own times, such as crocodiles, lizards, snakes, etc.

So many scholars call the instinctive brain primitive brain, basic brain, crocodile brain, lizard brain, or simply called the reptile brain. By about 200 million years ago, mammals were on the scene. In order to better adapt to their environment, they not only kept their body temperature constant, but also evolved emotions. With the support of emotions, mammals can seek advantage and avoid harm in harsh environments, which greatly improves their survival advantages. For example, fear can keep them away from danger, excitement can make them focus on hunting, happy emotions can enhance the intimacy between peers, and sad emotions can attract the love of sympathizers. This is why we like to have cats or dogs as pets, because these animals can easily connect with us emotionally and know how to please and care for us. In response, the mammalian brain has developed a unique emotional region (the limbic system) that brain scientists call the "emotional brain." Among mammals, monkeys are often used for observation and experimentation by humans, so the emotional brain is often referred to as the monkey brain. It wasn't until about 2.5 million years ago that humans distinguished themselves from mammals by developing a "neocortex" in the frontal region of the brain. It wasn't until 70,000 to 200,000 years ago that this neocorcortex really took shape, becoming the unrivaled brain region that allowed us to generate language, create art, develop technology, build civilization, and ever since dominate the planet. Humans are obsessed with their own unique reason, so we call this new brain region the "rational brain," although others like to call it the rational or thinking brain. We all know the story of "The Farmer and the Snake" in Aesop's Fables. The story tells about a farmer who found a frozen snake by the side of the road on a cold winter day. He felt pity and put it in his arms to warm it with his own heat. When the snake woke up, instead of thanking the farmer, it bit him. Before he died, the farmer regretted and said, "I have compassion on the wicked. I deserve to die and be recompensed." In fact, if the farmer knew something about the brain, he wouldn't have made such a stupid mistake. Snake, a cold-blooded reptile, does not have a developed emotional brain at all. It does not know what to be grateful for. It will only rely on instinct to act. The foolish farmer thought that the snake had the same heart of good and evil as human beings, and would return the favor. As a result, he died. It can be seen that we human beings are very different from other animals in this world. In our brain, from the inside out, there are at least three kinds of brain: the old instinctive brain, the relatively old emotional brain and the very young rational brain. But most people don't know this, and just assume that all the animals in the world have only one brain, and that humans are only slightly smarter. This misconception makes us do stupid things like the farmer who saved the snake.