Some things are up to you
Earliest we can find
This is the earliest source we can find for the idea. Said again in 8 books on our list: Marcus Aurelius, Meditations (c. 175), Michel de Montaigne, Essays (1580), René Descartes, Discourse on Method (1637), Arnold Bennett, The Human Machine (1908), Bertrand Russell, The Conquest of Happiness (1930), Reinhold Niebuhr, as printed by Winnifred Wygal, The Serenity Prayer (1933), Stephen R. Covey, The 7 Habits of Highly Effective People (1989) and Massimo Pigliucci, How to Be a Stoic (2017).
“There are things which are within our power, and there are things which are beyond our power. Within our power are opinion, aim, desire, aversion, and, in one word, whatever affairs are our own. Beyond our power are body, property, reputation, office, and, in one word, whatever are not properly our own affairs.”
Full text read.
Epictetus, Enchiridion 1, tr. Thomas Wentworth Higginson (1865).
Project Gutenberg eBook #45109, gutenberg.org/