Every yes has an opportunity cost. I have had plenty of evenings where more than anything I wished I had just said no and chilled at home with housemates. I a

Every yes has an opportunity cost. I have had plenty of evenings where more than anything I wished I had just said no and chilled at home with housemates. I am a big proponent of infinite universes branched at every decision point, and I've no doubt that saying yes every time doesn't result in the happiest outcome possible.