Many stories involve groups of friends or acquaintances and their mutual growth and change, while others are focused more on individual characters who interact less often and are usually focused on their own thoughts, goals, etc.
I personally am kind of a loner, and I find that it is easier for me to write from the perspective of single characters who occasionally run into other people. Perhaps those who are more gregarious and socially connected might find the opposite to be true: a group perspective where sometimes individuals carry the focus.
I’m not saying that one mode doesn’t have individuals who do things on their own, and the other never has group or other social events. It’s more about the relative centrality of those two different perspectives. A loner can be alone in a crowd, and a highly social person will bring friends and companions along with them in their mind even when they are actually alone.
So, that’s the question: do you find that your personal mode of social interaction gets reflected at a fundamental level in the fiction you write? If you’re a loner, does your writing focus one individuals with social interactions in the background? If you’re very social, does your writing tend to assume highly social contexts and situations that are secondarily made up of individuals?
And, assuming that this is actually a thing, what could be done to write effectively in the incongruent mode (I.e., socially if you’re a loner or individual-focused if you’re highly social)?