Buddhism calls it Anicca. Heraclitus said no one steps into the same river twice. Marcus Aurelius filled the Meditations with reminders. The Tao Te Ching teaches that the soft overcomes the hard precisely because it accepts change.
To see impermanence clearly is not to despair but to arrive — the moment you hold is the moment you are in. What doesn’t last has already given itself fully to being what it is.