Extrinstic motivation is motivation which is external to yourself
The extrinsically motivated person is primarily motivated by factors such as money, views, respect, love, praise, fame or notoriety. If we look at for example the typical Bitcoin miner which receives cryptocurrency rewards in exchange for supporting the protocol then we can see most Bitcoin miners are extrinsically motivated. Speculators in Bitcoin who buy the token at a low price and who have an expectation of profit may also be extrinsically motivated. The center of gravity of right and wrong behavior does have a lot to do with motivation.
A person who for example wishes to make it to heaven after they die is someone motivated to be moral by extrinsic motivation. Heaven is the reward for good behavior (morally good in the religious sense of the word). A person who seeks to avoid prison is motivated to be a good citizen also extrinsically (to avoid prison by following the laws). For example, a person who violates the law can quantify their losses in terms of time lost in prison (or court) and monetary losses in terms of fees, fines, etc. In other words, for most people most of the time crime does not pay.
Intrinsic motivation is internal motivation from the self
Intrinsic motivation is very different. A person who is intrinsically motivated does something because it feels good to do it. This kind of motivation encourages eating food, encourages sex, discourages certain behaviors due to feelings of shame, disgust, etc. A person may be demotivated intrinsically from doing certain behaviors simply because it's disgusting, ugly, boring, etc.
A person who is intrinsically motivated to do good deeds will do it because they get a good feeling about themselves. To this kind of person it feels good to do good. This kind of motivation also applies to people who exercise, who study, who do anything which they deem fun. The activity itself is it's own reward is what they say. Not everyone receives any intrinsic reward and those who do may not receive it from the same activities. The extrovert who seeks social interaction often does receive some kind of high from being around other people while the introvert may receive only stress of being around a crowd. This example of social motivation illustrates the difference between the intrinsically motivated in the social context vs the extrinsically motivated in the social context.
Is it possible that introverts are more extrinsically motivated socially? In that they become consumed by what each person might be thinking of them at any point in time? What about the "keeping up with the Jone's" behaviors where if someone buys something new it makes others feel they have to buy it too in order to maintain their perceived status? Extrinsic motivation in the social context may be more about perceptions, status, because the rewards are the goals of social activity while the intrinsic social behaviors are that the activity itself is it's own reward.
What do you think? Do you find you are more intrinsically motivated or extrinsically motivated?