Quotes from: Jordan B. Peterson (2018) 12 Rules for life: An antidote to chaos. United States published by Random House Canada.

Birds—and Territory
[...] Chickens, like suburbanites, live communally. Songbirds, such as wrens, do not, but they still inhabit a dominance hierarchy. It’s just spread out over more territory. The wiliest, strongest, healthiest and most fortunate birds occupy prime territory, and defend it. Because of this, they are more likely to attract high-quality mates, and to hatch chicks who survive and thrive. Protection from wind, rain and predators, as well as easy access to superior food, makes for a much less stressed existence. Territory matters, and there is little difference between territorial rights and social status. It is often a matter of life and death. [...]

If a contagious avian disease sweeps through a neighbourhood of well-stratified songbirds, it is the least dominant and most stressed birds, occupying the lowest rungs of the bird world, who are most likely to sicken and die. This is equally true of human neighbourhoods, when bird flu viruses and other illnesses sweep across the planet. The poor and stressed always die first, and in greater numbers. They are also much more susceptible to non-infectious diseases, such as cancer, diabetes and heart disease. When the aristocracy catches a cold, as it is said, the working class dies of pneumonia. [...]

Because territory matters, and because the best locales are always in short supply, territory-seeking among animals produces conflict. Conflict, in turn, produces another problem: how to win or lose without the disagreeing parties incurring too great a cost. This latter point is particularly important. Imagine that two birds engage in a squabble about a desirable nesting area. The interaction can easily degenerate into outright physical combat. Under such circumstances, one bird, usually the largest, will eventually win—but even the victor may be hurt by the fight. That means a third bird, an undamaged, canny bystander, can move in, opportunistically, and defeat the now-crippled victor. That is not at all a good deal for the first two birds. [...] (p. 3-4)


Conflict—and Territory
Over the millennia, animals who must co-habit with others in the same territories have in consequence learned many tricks to establish dominance, while risking the least amount of possible damage. [...] (p. 4)


The Nature of Nature
First, it is easy to assume that “nature” is something with a nature—something static. But it’s not: at least not in any simple sense. It’s static and dynamic, at the same time. The environment—the nature that selects—itself transforms. The famous yin and yang symbols of the Taoists capture this beautifully. Being, for the Taoists—reality itself—is composed of two opposing principles, often translated as feminine and masculine, or even more narrowly as female and male. However, yin and yang are more accurately understood as chaos and order. The Taoist symbol is a circle enclosing twin serpents, head to tail. The black serpent, chaos, has a white dot in its head. The white serpent, order, has a black dot in its head. This is because chaos and order are interchangeable, as well as eternally juxtaposed. There is nothing so certain that it cannot vary. Even the sun itself has its cycles of instability. Likewise, there is nothing so mutable that it cannot be fixed. Every revolution produces a new order. Every death is, simultaneously, a metamorphosis. [...]

Nature is not simply dynamic, either. Some things change quickly, but they are nested within other things that change less quickly (music frequently models this, too). Leaves change more quickly than trees, and trees more quickly than forests. Weather changes faster than climate. If it wasn’t this way, then the conservatism of evolution would not work, as the basic morphology of arms and hands would have to change as fast as the length of arm bones and the function of fingers. It’s chaos, within order, within chaos, within higher order. The order that is most real is the order that is most unchanging—and that is not necessarily the order that is most easily seen. The leaf, when perceived, might blind the observer to the tree. The tree can blind him to the forest. And some things that are most real (such as the ever-present dominance hierarchy) cannot be “seen” at all. [...]

The part of our brain that keeps track of our position in the dominance hierarchy is therefore exceptionally ancient and fundamental.17 It is a master control system, modulating our perceptions, values, emotions, thoughts and actions. It powerfully affects every aspect of our Being, conscious and unconscious alike. This is why, when we are defeated, we act very much like lobsters who have lost a fight. Our posture droops. We face the ground. We feel threatened, hurt, anxious and weak. If things do not improve, we become chronically depressed. Under such conditions, we can’t easily put up the kind of fight that life demands, and we become easy targets for harder-shelled bullies. And it is not only the behavioural and experiential similarities that are striking. Much of the basic neurochemistry is the same. [...]

Consider serotonin, the chemical that governs posture and escape in the lobster. Low-ranking lobsters produce comparatively low levels of serotonin. This is also true of low-ranking human beings (and those low levels decrease more with each defeat). Low serotonin means decreased confidence. Low serotonin means more response to stress and costlier physical preparedness for emergency—as anything whatsoever may happen, at any time, at the bottom of the dominance hierarchy (and rarely something good). Low serotonin means less happiness, more pain and anxiety, more illness, and a shorter lifespan—among humans, just as among crustaceans. Higher spots in the dominance hierarchy, and the higher serotonin levels typical of those who inhabit them, are characterized by less illness, misery and death, even when factors such as absolute income—or number of decaying food scraps—are held constant. The importance of this can hardly be overstated. [...] (p. 11-15)


Top and Bottom
There is an unspeakably primordial calculator, deep within you, at the very foundation of your brain, far below your thoughts and feelings. It monitors exactly where you are positioned in society—on a scale of one to ten, for the sake of argument. If you’re a number one, the highest level of status, you’re an overwhelming success. If you’re male, you have preferential access to the best places to live and the highest-quality food. People compete to do you favours. You have limitless opportunity for romantic and sexual contact. You are a successful lobster, and the most desirable females line up and vie for your attention. If you’re female, you have access to many high-quality suitors: tall, strong and symmetrical; creative, reliable, honest and generous. And, like your dominant male counterpart, you will compete ferociously, even pitilessly, to maintain or improve your position in the equally competitive female mating hierarchy. Although you are less likely to use physical aggression to do so, there are many effective verbal tricks and strategies at your disposal, including the disparaging of opponents, and you may well be expert at their use.

If you are a low-status ten, by contrast, male or female, you have nowhere to live (or nowhere good). Your food is terrible, when you’re not going hungry. You’re in poor physical and mental condition. You’re of minimal romantic interest to anyone, unless they are as desperate as you. You are more likely to fall ill, age rapidly, and die young, with few, if any, to mourn you. Even money itself may prove of little use. You won’t know how to use it, because it is difficult to use money properly, particularly if you are unfamiliar with it. Money will make you liable to the dangerous temptations of drugs and alcohol, which are much more rewarding if you have been deprived of pleasure for a long period. Money will also make you a target for predators and psychopaths, who thrive on exploiting those who exist on the lower rungs of society. The bottom of the dominance hierarchy is a terrible, dangerous place to be. [...]

If you are judged by your peers as of little worth, the counter restricts serotonin availability. That makes you much more physically and psychologically reactive to any circumstance or event that might produce emotion, particularly if it is negative. You need that reactivity. Emergencies are common at the bottom, and you must be ready to survive. [...]

Unfortunately, that physical hyper-response, that constant alertness, burns up a lot of precious energy and physical resources. This response is really what everyone calls stress, and it is by no means only or even primarily psychological. It’s a reflection of the genuine constraints of unfortunate circumstances. When operating at the bottom, the ancient brain counter assumes that even the smallest unexpected impediment might produce an uncontrollable chain of negative events, which will have to be handled alone, as useful friends are rare indeed, on society’s fringes. You will therefore continually sacrifice what you could otherwise physically store for the future, using it up on heightened readiness and the possibility of immediate panicked action in the present. When you don’t know what to do, you must be prepared to do anything and everything, in case it becomes necessary. You’re sitting in your car with the gas and brake pedals both punched to the mat. Too much of that and everything falls apart. The ancient counter will even shut down your immune system, expending the energy and resources required for future health now, during the crises of the present. It will render you impulsive, so that you will jump, for example, at any short-term mating opportunities, or any possibilities of pleasure, no matter how sub-par, disgraceful or illegal. It will leave you far more likely to live, or die, carelessly, for a rare opportunity at pleasure, when it manifests itself. The physical demands of emergency preparedness will wear you down in every way. [...](p. 15-17)


Malfunction
Sometimes, however, the counter mechanism can go wrong. Erratic habits of sleeping and eating can interfere with its function. Uncertainty can throw it for a loop. The body, with its various parts, needs to function like a well-rehearsed orchestra. Every system must play its role properly, and at exactly the right time, or noise and chaos ensue. It is for this reason that routine is so necessary. The acts of life we repeat every day need to be automatized. They must be turned into stable and reliable habits, so they lose their complexity and gain predictability and simplicity. [...]

It is for such reasons that I always ask my clinical clients first about sleep. Do they wake up in the morning at approximately the time the typical person wakes up, and at the same time every day? If the answer is no, fixing that is the first thing I recommend. It doesn’t matter so much if they go to bed at the same time each evening, but waking up at a consistent hour is a necessity. Anxiety and depression cannot be easily treated if the sufferer has unpredictable daily routines. The systems that mediate negative emotion are tightly tied to the properly cyclical circadian rhythms. [...]

The next thing I ask about is breakfast. I counsel my clients to eat a fat and protein-heavy breakfast as soon as possible after they awaken (no simple carbohydrates, no sugars, as they are digested too rapidly, and produce a blood-sugar spike and rapid dip). This is because anxious and depressed people are already stressed, particularly if their lives have not been under control for a good while. Their bodies are therefore primed to hypersecrete insulin, if they engage in any complex or demanding activity. If they do so after fasting all night and before eating, the excess insulin in their bloodstream will mop up all their blood sugar. Then they become hypoglycemic and psycho-physiologically unstable.22 All day. Their systems cannot be reset until after more sleep. I have had many clients whose anxiety was reduced to subclinical levels merely because they started to sleep on a predictable schedule and eat breakfast. [...] (p. 17-18)


Rising Up
[...] If you can bite, you generally don’t have to. When skillfully integrated, the ability to respond with aggression and violence decreases rather than increases the probability that actual aggression will become necessary. If you say no, early in the cycle of oppression, and you mean what you say (which means you state your refusal in no uncertain terms and stand behind it) then the scope for oppression on the part of oppressor will remain properly bounded and limited. The forces of tyranny expand inexorably to fill the space made available for their existence. People who refuse to muster appropriately self-protective territorial responses are laid open to exploitation as much as those who genuinely can’t stand up for their own rights because of a more essential inability or a true imbalance in power. [...]

To stand up straight with your shoulders back is to accept the terrible responsibility of life, with eyes wide open. It means deciding to voluntarily transform the chaos of potential into the realities of habitable order. It means adopting the burden of self-conscious vulnerability, and accepting the end of the unconscious paradise of childhood, where finitude and mortality are only dimly comprehended. It means willingly undertaking the sacrifices necessary to generate a productive and meaningful reality (it means acting to please God, in the ancient language). [...]

So, attend carefully to your posture. Quit drooping and hunching around. Speak your mind. Put your desires forward, as if you had a right to them—at least the same right as others. Walk tall and gaze forthrightly ahead. Dare to be dangerous. Encourage the serotonin to flow plentifully through the neural pathways desperate for its calming influence. [...](p. 23, 27-28)