Extroverts get their energy from people. They need to be around people and feel energized in groups.
Introverts get their energy from being alone. They need to recharge after time in groups.
I got those a few years ago and think they're illustrative of at least part of being an introvert or extrovert. I would guess it is possible to not be all one or the other. Perhaps some go through stages with each. I don't know, but I've always been an introvert.
As to why someone is an introvert or extrovert, who knows. It is what it is. To me, the big thing is figuring out who we are, how we recharge and not apologizing for it. But, you know in life, sometimes we have to step out of a comfort zone and move into regions that are not so comfortable. There can be many reasons for the shift; but when we know ourselves, we will take time as quickly as we can to get to where we can build back up our energy.
In America, it is believed that most people are extroverts, but studies say it's pretty much 50-50. So how do we end up with 75% being considered extroverts?
"What may seem surprising for some since Americans are thought to be very extroverted, but truth is that the culture simply values extroversion over introversion. However, the value of extroversion over introversion doesn't make extroversion more prevalent. It just pressures people who fall on the introversion side of the spectrum to act more extroverted, while true extroverts get positive reinforcement from the culture that their temperament is the default." Chloe Shani MalveauxIn a culture that makes you feel guilty or less successful, when you need a lot of alone time, it can be hard to live true to what you know you need. People force themselves into activities because that is praised-- often leading to stress and even health problems.
"To thine own self be true," wrote Shakespeare. It should be accompanied by know yourself-- even if it's not popular.
I believe it's important to not only accept our own needs, as to from where our energy comes but also respect the way others are. One isn't right and the other wrong. They just are. If an introvert is married to an extrovert, that can create some problems although when two introverts get together, they may never come out of their cave.
Saturday, more coming on introverts and writing.