INTROVERTS are especially vulnerable to challenges like marital tension, a parent’s death, or abuse. They’re more likely than their peers to react to these events with depression, anxiety, and shyness. Indeed, about a quarter of Kagan’s high-reactive kids suffer from some degree of the condition known as “social anxiety disorder,” a chronic and disabling form of shyness.

Nor are introverts necessarily shy. Shyness is the fear of social disapproval or humiliation, while introversion is a preference for environments that are not overstimulating. Shyness is inherently painful; introversion is not. One reason that people confuse the two concepts is that they sometimes overlap (though psychologists debate to what degree). Some psychologists map the two tendencies on vertical and horizontal axes, with the introvert-extrovert spectrum on the horizontal axis, and the anxious-stable spectrum on the vertical. With this model, you end up with four quadrants of personality types: calm extroverts, anxious (or impulsive) extroverts, calm introverts, and anxious introverts. In other words, you can be a shy extrovert, like Barbra Streisand, who has a larger-than-life personality and paralyzing stage fright; or a non-shy introvert, like Bill Gates, who by all accounts keeps to himself but is unfazed by the opinions of others.

A Manifesto for Introverts

1. There's a word for 'people who are in their heads too much': thinkers.

2. Solitude is a catalyst for innovation.

3. The next generation of quiet kids can and must be raised to know their own strengths.

4. Sometimes it helps to be a pretend extrovert. There will always be time to be quiet later.

5. But in the long run, staying true to your temperament is key to finding work you love and work that matters.

6. One genuine new relationship is worth a fistful of business cards.

7. It's OK to cross the street to avoid making small talk.

8. 'Quiet leadership' is not an oxymoron.

9. Love is essential; gregariousness is optional.

10. 'In a gentle way, you can shake the world.' -Mahatma Gandhi

Or at school you might have been prodded to come “out of your shell” — that noxious expression which fails to appreciate that some animals naturally carry shelter everywhere they go, and that some humans are just the same.

Remember that introverts react not only to new people, but also to new places and events. So don’t mistake a child’s caution in new situations for an inability to relate to others. He’s recoiling from novelty or overstimulation, not from human contact. Introverts are just as likely as the next kid to seek others’ company, though often in smaller doses

"Many Introverts are also "highly sensitive," which sounds poetic, but is actually a technical term in psychology. If you are a sensitive sort, then you're more apt than the average person to feel pleasantly overwhelmed by Beethoven's "Moonlight Sonata" or a well-turned phrase or an act of extraordinary kindness. You may be quicker than others to feel sickened by violence and ugliness, and you likely have a very strong conscience."

Shyness is the fear of social disapproval or humiliation, while introversion is a preference for environments that are not overstimulating. Shyness is inherently painful; introversion is not.

It's not always so easy, it turns out, to identify your core personal projects. And it can be especially tough for introverts, who have spent so much of their lives conforming to extroverted norms that by the time they choose a career, or a calling, it feels perfectly normal to ignore their own preferences. They may be uncomfortable in law school or nursing school or in the marketing department, but no more so than they were back in middle school or summer camp.

Introverts, in contrast, may have strong social skills and enjoy parties and business meetings, but after a while wish they were home in their pajamas. They prefer to devote their social energies to close friends, colleagues, and family. They listen more than they talk, think before they speak, and often feel as if they express themselves better in writing than in conversation. They tend to dislike conflict. Many have a horror of small talk, but enjoy deep discussions. A few things introverts are not: The word introvert is not a synonym for hermit or misanthrope.

Introversion — along with its cousins sensitivity, seriousness, and shyness — is now a second-class personality trait, somewhere between a disappointment and a pathology.

Whoever you are, bear in mind that appearance is not reality. Some people act like extroverts, but the effort costs them energy, authenticity, and even physical health. Others seem aloof or self-contained, but their inner landscapes are rich and full of drama. So the next time you see a person with a composed face and a soft voice, remember that inside her mind she might be solving an equation, composing a sonnet, designing a hat. She might, that is, be deploying the powers of quiet.

Every moment of life wants to tell us something, but we do not want to hear what it has to say: when we are alone and quiet we are afraid that something will be whispered into our ear and hence we despise quiet and drug ourselves with sociability.

Introversion- along with its cousins sensitivity, seriousness, and shyness- is now a second-class personality trait, somewhere between a disappointment and a pathology. Introverts living in the Extrovert Ideal are like women in a man's world, discounted because of a trait that goes to the core of who they are. Extroversion is an enormously appealing personality style, but we've turned it into an oppressive standard to which most of us feel we must conform.

self-effacing introvert. How do they get along? Terribly.