«Turns out you can
cry over spilled milk — just
like I did when I was awkwardly pumping on my first day back at work after my first baby was born, and
spilled an entire bottle of freshly pumped
milk on my desk.»
This is contained in cultural slogans
like «don't throw good money after bad» or «there's no use
crying over spilled milk», or even in sports, when coaches admonish their players to «forget about the last play, focus on the next play.»