When we encounter someone, usually the mind automatically slots the person into a category: man, woman, your friend Tom, the kid next door, etc. Watch this happen in your own mind as you meet or talk with a co-worker, salesclerk, or family member.

In effect, the mind summarizes and simplifies tons of details into a single thing – a human thing to be sure, but one with an umbrella label that makes it easy to know how to act. For example: “Oh, that’s my boss (or mother-in-law, or boyfriend, or traffic cop, or waiter) . . . and now I know what to do. Good.”

This labeling process is fast, …

As the nervous system evolved, your brain developed in three stages:

• Reptile – Brainstem, focused on avoiding harm
• Mammal – Limbic system, focused on approaching rewards
• Primate – Cortex, focused on attaching to “us”

Since the brain is integrated, avoiding, approaching, and attaching are accomplished by its parts working together. Nonetheless, each of these functions is particularly served and shaped by the region of the brain that first evolved to handle it.

Petting your inner lizard was about how to soothe and calm the most ancient structures of the brain, the ones that manage the first emotion of all: fear. This article continues the series by focusing on how to help …

To keep our ancestors alive, the brain evolved strong tendencies toward fear, including an ongoing internal trickle of unease. This little whisper of worry keeps you scanning your inner and outer worlds for signs of trouble.

This background of unsettledness and watchfulness is so automatic that you can forget it’s there. So see if you can tune into a tension, guarding or bracing in your body. Or a vigilance about your environment or other people. Or a block against completely relaxing, letting down, letting go. Try to walk through an office or store that you know is safe without a molecule of wariness; it’s really hard. Or try to sit at home …

I’ve always liked lizards.

Growing up in the outskirts of Los Angeles, I played in the foothills near our home. Sometimes I’d catch a lizard and stroke its belly, so it would relax in my hands, seeming to feel at ease.

In my early 20′s, I found a lizard one chilly morning in the mountains. It was torpid and still in the cold and let me pick it up. Concerned that it might be freezing to death, I placed it on the shoulder of my turtleneck, where it clung and occasionally moved about for the rest of the day. There was a kind of wordless communication between us, in which the lizard …

We evolved to be afraid.

The ancient ancestors that were casual and blithely hopeful, underestimating the risks around them – predators, loss of food, aggression from others of their kind – did not pass on their genes. But the ones that were nervous were very successful – and we are their great-grandchildren, sitting atop the food chain.

Consequently, multiple hair-trigger systems in your brain continually scan for threats. At the least whiff of danger – which these days comes mainly in the form of social hazards like indifference, criticism, rejection, or disrespect – alarm bells start ringing. See a frown across a dinner table, hear a cold tone from a supervisor, …

To simplify a complex process, your brain evolved in three stages:

• Reptile – Brainstem, focused on avoiding harm
• Mammal – Limbic system, focused on approaching rewards
• Primate – Cortex, focused on attaching to “us”

This post is about weaving the sense of being included and loved into the primate cerebral cortex.

In ancient times, membership in a band was critical to survival: exile was a death sentence in the Serengeti. Today, feeling understood, valued, and cherished – whether as a child or an adult, and with regard to another person or to a group – may not be a life and death matter (though studies do show that survival rates for cancer …

Everyone messes up. Me, you, the neighbors, Mother Teresa, Mahatma Gandhi, King David, the Buddha, everybody.

It’s important to acknowledge mistakes, feel appropriate remorse, and learn from them so they don’t happen again. But most people keep beating themselves up way past the point of usefulness: they’re unfairly self-critical.

Inside the mind are many sub-personalities. For example, one part of me might set the alarm clock for 6 am to get up and exercise . . . and then when it goes off, another part of me could grumble: “Who set the darn clock?” More broadly, there is a kind of inner critic and inner protector inside each …