Illustration by Jasu Hu

The Stoic philosopher Epictetus was born a slave, around 55 A.D., in the Greco-Roman spa town of Hierapolis—present-day Pamukkale, Turkey. I first encountered his teachings in 2011, shortly after moving from San Francisco to Istanbul. I lived alone on a university campus in a forest. In the midst of a troubled long-distance relationship, I sometimes went days without talking to anyone but my boyfriend’s disembodied head on Skype. I was demoralized by Turkish politics, which made both secularists and religious people feel like victims. If you were a woman, no matter what you were wearing—décolleté or a head scarf—someone would give you a dirty look.

The first line of Epictetus’ manual of ethical advice, the Enchiridion—“Some things are in our control and others not”—made me feel that a weight was being lifted off my chest. For Epictetus, the only thing we can totally control, and therefore the only thing we should ever worry about, is our own judgment about what is good. If we desire money, health, sex, or reputation, we will inevitably be unhappy. If we genuinely wish to avoid poverty, sickness, loneliness, and obscurity, we will live in constant anxiety and frustration. Of course, fear and desire are unavoidable. Everyone feels those flashes of dread or anticipation. Being a Stoic means interrogating those flashes: asking whether they apply to things outside your control and, if they do, being “ready with the reaction ‘Then it’s none of my concern.’ ”

Reading Epictetus, I realized that most of the pain in my life came not from any actual privations or insults but, rather, from the shame of thinking that they could have been avoided. Wasn’t it my fault that I lived in such isolation, that meaning continued to elude me, that my love life was a shambles? When I read that nobody should ever feel ashamed to be alone or to be in a crowd, I realized that I often felt ashamed of both of those things. Epictetus’ advice: when alone, “call it peace and liberty, and consider yourself the gods’ equal”; in a crowd, think of yourself as a guest at an enormous party, and celebrate the best you can.

Epictetus also won me over with his tone, which was that of an enraged athletics coach. If you want to become a Stoic, he said, “you will dislocate your wrist, sprain your ankle, swallow quantities of sand,” and you will still suffer losses and humiliations. And yet, for you, every setback is an advantage, an opportunity for learning and glory. When a difficulty comes your way, you should feel proud and excited, like “a wrestler whom God, like a trainer, has paired with a tough young buck.” In other words, think of every unreasonable asshole you have to deal with as part of God’s attempt to “turn you into Olympic-class material.” This is a very powerful trick.

Much of Epictetus’ advice is about not getting angry at slaves. At first, I thought I could skip those parts. But I soon realized that I had the same self-recriminatory and illogical thoughts in my interactions with small-business owners and service professionals. When a cabdriver lied about a route, or a shopkeeper shortchanged me, I felt that it was my fault, for speaking Turkish with an accent, or for being part of an élite. And, if I pretended not to notice these slights, wasn’t I proving that I really was a disengaged, privileged oppressor? Epictetus shook me from these thoughts with this simple exercise: “Starting with things of little value—a bit of spilled oil, a little stolen wine—repeat to yourself: ‘For such a small price, I buy tranquillity.’ ”

Born nearly two thousand years before Darwin and Freud, Epictetus seems to have anticipated a way out of their prisons. The sense of doom and delight that is programmed into the human body? It can be overridden by the mind. The eternal war between subconscious desires and the demands of civilization? It can be won. In the nineteen-fifties, the American psychotherapist Albert Ellis came up with an early form of cognitive-behavioral therapy, based largely on Epictetus’ claim that “it is not events that disturb people, it is their judgments concerning them.” If you practice Stoic philosophy long enough, Epictetus says, you stop being mistaken about what’s good even in your dreams. ♦