[_98fj]

"Sorting themselves out" is a loaded word, I see that now.

I agree with you. This being at peace with your own company is a result of a tendency to work on your inside, and respond to emotions and "calls" from there immediately.

The other side are people who regularly experience a state of mind which could be described as happily relaxed nothingness. No thoughts, ideas, inner monologues etc. No urgency to work on their inner life.

That isn't better or worse. It brings advantages and disadvantages.