“Don’t run back to the past,
don’t hope for the future.
What’s past is left behind;
the future has not arrived;
and phenomena in the present
are clearly seen in every case.
Knowing this, foster it—
unfaltering, unshakable.
Today’s the day to keenly work—
who knows, tomorrow may bring death!
For there is no bargain to be struck
with Death and his mighty hordes.
The peaceful sage explained it’s those
who keenly meditate like this,
tireless all night and day,
who truly have that one fine night.”
The Buddha | from the discourse “One Fine Night” | Majjhima Nikaya 131
https://suttacentral.net/mn131/en/sujato
