Schwartz's research suggests something important: we can stretch our personalities, but only up to a point. Our inborn temperaments influence us, reg… - Susan Cain

When your conscientiousness impels you to take on more than you can handle, you begin to lose interest, even in tasks that normally engage you. You risk your physical health. 'Emotional labor,' which is the effort we make to control and change our own emotions, is associated with stress, burnout, and even physical symptoms like and increase in cardiovascular disease.

we can stretch our personalities, but only up to a point. Our inborn temperaments influence us, regardless of the lives we lead. A sizable part of who we are is ordained by our genes, by our brains, by our nervous systems. And yet the elasticity that Schwartz found in some of the high-reactive teens also suggests the converse: we have free will and can use it to shape our personalities.
These seem like contradictory principles, but they are not. Free will can take us far, suggests Dr. Schwartz’s research, but it cannot carry us infinitely beyond our genetic limits. Bill Gates is never going to be Bill Clinton, no matter how he polishes his social skills, and Bill Clinton can never be Bill Gates, no matter how much time he spends alone with a computer.
We might call this the “rubber band theory” of personality. We are like rubber bands at rest. We are elastic and can stretch ourselves, but only so much.

"The conference is geared to people who enjoy meaningful discussions and sometimes "move a conversation to a deeper level, only to find out we are the only ones there." . . . When it's my turn, I talk about how I've never been in a group environment in which I didn't feel obliged to present an unnaturally rah-rah version of myself. . . .

Scientists can easily report on the behavior of extroverts, who can often be found laughing, talking, or gesticulating. But "if a person is standing in the corner of a room, you can attribute about fifteen motivations to that person. But you don't really know what's going on inside." . . .

So what is the inner behavior of people whose most visible feature is that when you take them to a party they aren't very pleased about it? . . .

The highly sensitive tend to be philosophical or spiritual in their orientation, rather than materialistic or hedonistic. They dislike small talk. They often describe themselves as creative or intuitive . . . . They dream vividly, and can often recall their dreams the next day. They love music, nature, art, physical beauty. They feel exceptionally strong emotions — sometimes acute bouts of joy, but also sorrow, melancholy, and fear.

Highly sensitive people also process information about their environments — both physical and emotional — unusually deeply. They tend to notice subtleties that others miss — another person's shift in mood, say, or a lightbulb burning a touch too brightly. . . .

[Inside fMRI machines], the sensitive people were processing the photos at a more elaborate level than their peers . . . . It may also help explain why they're so bored by small talk. "If you're thinking in more complicated ways," she told me, "then talking about the weather or where you went for the holidays is not quite as interesting as talking about values or morality."

The other thing Aron found about sensitive people is that sometimes they're highly empathic. It's as if they have thinner boundaries separati