There is a particular kind of woman who lies awake replaying a moment when she said no. She turns it over, hunting for the cruelty in it, rehearsing the apology she will send in the morning. In my experience, that woman has almost never done anything selfish. Genuinely selfish people are not kept awake by the question; they sleep soundly and wake up wanting the window open. The guilt arrives most reliably in those who have spent decades being praised for accommodating everyone else.
What the word is actually hiding
"Selfish" has become a catch-all for a whole family of ordinary human acts: wanting rest, having a preference, declining an invitation, spending money on yourself, stating that something hurt. When one word covers that much ground, it stops describing behaviour and starts enforcing a role. Notice who it tends to be aimed at, and who is allowed to leave the table without clearing it.
A more useful distinction is between self-interest and self-abandonment, with a narrow band in the middle where most decent lives are lived. Self-abandonment is agreeing to the weekend you dread, then being short-tempered with the people you agreed to see. Actual selfishness means taking something from someone who cannot afford to lose it. Saying "I can't host Christmas this year" is neither. It is information.
