When is selfishness a good thing and when is it a hindrance? Is it like self-esteem/self-worth to be selfish when a situation calls for it and borderline narcissism when a situation doesn't call it for?
Say I want to be selfish because I want to hang out with someone (meaning I am keeping that person for me) on a particular day. I can see that that person may also have others he may want to hang out with on a certain day. But I see that day or surrounding day to be special for us (that day is of a particular significance to us both.) Not only is it a special day, but because we haven't been talkative with each other for a long time now and that day has special meanings to both of us. So in other words, I want to use that day to break the ice. And since we have something in common that day, I want to use it as catalyst to get us talking together again.
However, I can also see that some others may want to spend that special day with that person.
Would you, in this case, go ahead and be selfish?