Marcus Aurelius argues that only the present moment is truly yours, making it the sole time you can lose. One should view past life as ended and treat remaining days as surplus, focusing on living according to reason. True life begins only when one stops wasting time and masters their mind in the present.

The years you have already lived are dead, the years ahead are uncertain, and the only thing you ever own is the breath you are taking right now. Whether you have lived forty years or three thousand, you cannot lose the past because it is gone, nor the future because you do not possess it yet; a man can only lose the present moment. Look at your past life as if you had died today and it were completely over. Every day after this is surplus—strip away your anxiety and live what remains according to nature and reason. You do not start living when you are born; you start living when you stop wasting time. A man who dies at eighty without mastering his mind has barely lived at all, while a man who wakes up to reason late in life begins his true lifespan from that hour. Stop acting as if you have ten thousand years left. Time is a fast-moving river, and the dust clears only when you stop waiting to become a good, clear-headed man tomorrow and simply be one today. — Inspired by Marcus Aurelius, Meditations

Renting a house is fine. Renting a car is fine. Be careful renting the tools you think with. They were built by someone else, for someone else's goals, and they can be taken back. Own the foundation. Rent the decoration.