Stoic core practices
Stoicism describes itself as a philosophy of life rather than merely a theoretical system. The three-part curriculum of physics, logic, and ethics (see Stoic systematic philosophy: physics, logic, ethics) is ultimately in service of living well. Accordingly, the Stoics — especially the Roman-period writers Epictetus, Seneca, and Marcus Aurelius — articulate a set of concrete psychological practices intended to help the practitioner live more consistently in accord with wisdom and virtue.
The dichotomy of control
The most foundational Stoic practice derives from the opening of Epictetus' Enchiridion: "Some things are in our control and others not." Within control are opinion, pursuit, desire, aversion, and our own actions — "whatever are our own actions." Outside control are body, reputation, outcomes, and other people's behavior. The instruction is simple: direct all energy toward the first category and consciously release the second. Not because external events don't matter emotionally, but because energy spent trying to control them is genuinely wasted and adds suffering without adding influence.
In real time, this becomes a single question applied to any source of stress: "Is this within my control?" If yes, act. If no, release and redirect. Applied consistently, this practice reduces anxiety more reliably than almost any other intervention.
Morning reflection
Marcus Aurelius begins the second book of the Meditations with a morning preparation: anticipate the day ahead, including the difficult people and frustrating events one is likely to meet, and decide in advance how one intends to respond. The written form matters — writing forces precision that purely mental reflection cannot achieve. The key questions are: What is within my control today? What challenges might I face, and how do I intend to respond?
Evening review
Seneca describes the practice in On Anger (3.36): "I examine my entire day and go back over what I've done and said, hiding nothing from myself." Three questions, written before sleep: What did I do well today? Where did I fall short? What one adjustment will I make tomorrow? The standard Seneca sets — "hiding nothing from myself" — is the only requirement.
Negative visualization (premeditatio malorum)
Once a week — or periodically — spend time imagining the loss of something currently valued: a relationship, health, a possession, a person. The purpose is not to produce anxiety but to remove it, and to restore genuine appreciation for what is present. A closely related practice is the premeditation of adversity (premeditatio malorum): imagining specific "catastrophes" that could befall you as if they are happening now, while maintaining Stoic objectivity and focusing on the distinction between what is and is not within your control — allowing initial emotional reactions to abate naturally before asking how the Sage would respond. Donald Robertson identifies this (alongside contemplation of the Sage and contemplation of death) as one of the three core Stoic practices, and Marcus Aurelius' Meditations model it throughout. Seneca also recommends a physical version: periodically choosing voluntary discomfort — simple food, a cold environment — and asking "Is this the condition that I feared?" (Letters 18.5). The demonstration that one's comfort has not become a dependency is itself calming and clarifying.
Memento mori and the view from above
Marcus Aurelius returns repeatedly to mortality as a clarifying lens: "Think of yourself as dead. You have lived your life. Now take what's left and live it properly" (Meditations 4.17). The awareness of finitude is not meant to produce fear but to restore accurate priorities — the trivial loses its urgency, what genuinely matters becomes clear. Donald Robertson groups contemplation of death as one of three core Stoic practices alongside contemplation of the Sage and premeditation of adversity, recommending the discipline of each morning treating the day as if it could be one's last, and each evening reviewing it as if it were.
The complementary view from above — imagining the whole world, or all of space and time, seen from high above — scales down the apparent magnitude of one's immediate situation. Marcus refers to looking down on agoras from above and describes the unconquered mind rising above violent passions as an "impenetrable citadel" (using the Greek word acropolis, Meditations 8.48). The practice takes on a poignant biographical dimension: later in life, Marcus would have occasion to stand on the actual Athenian Acropolis and look down upon the Ancient Agora — the very site where Socrates had been tried and executed centuries earlier. The practice cultivates the telos of living in agreement with the whole of nature by imaginatively occupying the perspective of that whole.
Contemplation of the Sage
The Stoics recommend imagining the ideal wise person — the sophos — and using that figure as a practical role model. How would the Sage cope with this challenge? What would she say? Specific historical examples — Socrates, Zeno, Epictetus, Marcus Aurelius himself — serve as exemplars. The practice builds a vocabulary of maxims and responses that can be memorized and deployed when needed.
The Stoic pause
Before responding to anything that produces a strong emotional reaction — a message, an insult, a piece of news — pause. One breath. Ask: is my first interpretation accurate? Is my intended response something I will be comfortable with tomorrow? Marcus captures this as: "If it is not right, do not do it. If it is not true, do not say it" (Meditations 12.17). The pause is the gap between impression and assent — the space in which rational agency operates.
Practice before theory
A recurring emphasis in both ancient and modern presentations of Stoicism is that practice precedes theory. The daily exercises described above can be started with no prior reading. The texts — Epictetus' Enchiridion, Marcus' Meditations, Seneca's Letters — deepen the practice significantly but are not its prerequisite. Epictetus spent forty years teaching these ideas; Marcus Aurelius practiced them for decades and still returned to the same lessons daily. The Stoics described virtue and the good life not as a destination reached but as a direction one keeps moving in.