"She's the sort of woman who lives for others—you can always tell the others by their hunted expression." - C.S. Lewis in The Screwtape Letters (p. 145).
He expands upon this concept in his book, The Four Loves.
Mrs. Fidget died a few months ago. It is really astonishing how her family have brightened up. The drawn look has gone from her husband’s face; he begins to be able to laugh. The younger boy, whom I had always thought an embittered, peevish little creature, turns out to be quite human. The elder, who was hardly ever at home except when he was in bed, is nearly always there now and has begun to reorganise the garden. The girl, who was always supposed to be “delicate” (though I never found out what exactly the trouble was), now has the riding lessons which were once out of the question, dances all night, and plays any amount of tennis. Even the dog who was never allowed out except on a lead is now a well-known member of the Lamp-post Club in their road.Perhaps the antidote to this problem is found in this quote.
Mrs. Fidget very often said that she lived for her family. And it was not untrue. Everyone in the neighbourhood knew it. “She lives for her family,” they said; “what a wife and mother!” She did all the washing; true, she did it badly, and they could have afforded to send it out to a laundry, and they frequently begged her not to do it. But she did. There was always a hot lunch for anyone who was at home and always a hot meal at night (even in mid-summer). They implored her not to provide this. They protested almost with tears in their eyes (and with truth) that they liked cold meals. It made no difference. She was living for her family. - C.S. Lewis in The Four Loves (as quoted in C.S. Lewis: An Examined Life, By Bruce L. Edwards, p. 197).
For what comes is Judgment: happy are those whom it finds labouring in their vocations, whether they were merely going out to feed the pigs or laying good plans to deliver humanity a hundred years hence from some great evil. The curtain has indeed now fallen. Those pigs will never in fact be fed, the great campaign against White Slavery or Governmental Tyranny will never in fact proceed to victory. No matter; you were at your post when the Inspection came. - C.S. Lewis in The World's Last Night, and Other Essays (1960).