In private, Augustus Cesar's last words on his deathbed --
"Have I played the part well? Then applaud as I exit."
You'll find the same theme in many of the greatest statesmen, artists, and inventors... treating life like a game or a part to be played, not as something to be overestimated in importance.
Shakespeare agrees --
All the world's a stage,
And all the men and women merely players:
They have their exits and their entrances;
And one man in his time plays many parts...
It's a radically different approach than most people take, which is to treat their life as if it's of the most dire seriousness and consequence. Interesting to meditate on, eh?