How does befriending neighbors play into a covert narcissist's strategy of keeping tabs on their partner?

I noticed that when I’m a little sleep deprived that I focus better. Does this happen to all of you? Is there science behind this? Is it an ADHD thing, or does this apply to all?
What was it like dealing with an honest driver after a car accident, especially when you were in a rush to get back to work? Did it change how you felt about the situation?