It's interesting, considering my mother's side of the family tends to seemingly run a bit narcissistic. My grandmother especially, but I also see bits of it in my mother. The best way to describe it is that her world sort of exists around her. Things only really matter if they personally affect her, and when they do it revolves around her feelings, regardless of the feelings of those around her. She clearly deeply ca…
I think that the vast majority of people (narcissist or not) will never do something unless they personally benefit from it in some way. Everything that people do is for themselves. Even when people give money to charity; they do it because it makes them feel good. I think that maybe the difference between a narcissist and an altruist is that a narcissist doesn't derive any positive emotions from helping others.
I tend to disagree, and would recommend that you read https://plato.stanford.edu/entries/altruism-biological/