It's not at all that we have too short a time to live, but that we squander a great deal of it. Life is long enough, and it's given in sufficient measure to do many great things if we spend it well. But when it's poured down the drain of luxury and neglect, when it's employed to no good end, we're finally driven to see that it has passed by before we even recognized it passing. And so it is we don't receive a short life, we make it so.

— Seneca, On the Brevity of Life, 1.3-4a (resource) Ryan Holiday, The Daily Stoic: 366 Meditations on Wisdom Perseverance and Art of Living