No sudden moves. Marcus Aurelius 4.47

A recurring theme in Stoic thought is that we accomplish all virtuous action in the present. The moment of death being uncertain, there is no putting off action that really matters, or taking it up suddenly, as a result of mortal apprehension. Set your affairs in order, Marcus advises himself, and let death find you calm, unwavering, making no great changes.

Ὥσπερ εἴ τίς σοι θεῶν εἶπεν, ὅτι αὔριον τεθνήξῃ ἢ πάντως γε εἰς τρίτην, οὐκέτ’ ἂν παρὰ μέγα ἐποιοῦ τὸ εἰς τρίτην μᾶλλον ἢ αὔριον, εἴ γε μὴ ἐσχάτως ἀγεννὴς εἶ· πόσον γάρ ἐστι τὸ μεταξύ; οὕτως καὶ τὸ εἰς πολλοστὸν ἔτος μᾶλλον ἢ αὔριον μηδὲν μέγα εἶναι νόμιζε.

If a god told you that you would die tomorrow or at most the day after, you would make no great change to the tasks set for those days, unless you happen to be the lowest sort of bastard. For what material difference could such an interval make? Rate the most distant year as nothing more significant than tomorrow.