Most overthinking starts in one of two places. You’re either chewing on something that already happened or bracing for something that probably won’t.
Marcus Aurelius had more reasons to lose sleep than almost anyone of his era. He ruled Rome through years of frontier war and a plague that spread across the empire, and one of his most trusted generals eventually declared himself emperor.
He also kept a journal. Those private notes were written for no audience but himself, and they became the book we now call Meditations.
Reading it feels like watching a man talk himself down from the same spirals we fight today. These five of his lessons are especially useful when your brain won’t quit spiraling.
1. Separate the Event From Your Interpretation
“If thou art pained by any external thing, it is not this thing that disturbs thee, but thy own judgment about it. And it is in thy power to wipe out this judgment now.” – Marcus Aurelius.
The situation itself is rarely what keeps you up at night. The story you attach to it does that job. The Stoics treated events as neutral raw material. A late reply is just a late reply until your mind decides it means rejection.
Marcus makes a point here that’s easy to skim past. If the judgment belongs to you, you can drop it right now instead of waiting for the facts to change. The practical move is to split what happened from what you added. Say your boss sends a meeting invite with a blank subject line.
That’s the fact. “I’m getting fired” is the story, and you created it yourself in seconds without a shred of evidence. Read the fact back to yourself and leave the story out.
2. Recognize That Anxiety Comes From Within
“Today I escaped anxiety. Or no, I discarded it, because it was within me, in my own perceptions, not outside.” – Marcus Aurelius.
A tight deadline feels like the cause of your stress. So does a text that’s been sitting on read since lunch. Look at how Marcus corrects himself mid-thought. He starts to say he escaped anxiety, then swaps the verb for discarded, as if he’d caught himself giving his circumstances too much credit.
Plenty of people wait for life to calm down before they let themselves relax. The big project finally wraps up, and a new one lands on the desk the following Monday.
Try changing the sentence you use to describe the stress. “This situation is making me anxious” puts the blame on you. “I keep imagining the worst version of this” is closer to the truth. It’s also something you can actually stop doing.
3. Confine Your Focus to the Present Moment
“Let not future things disturb thee, for thou wilt come to them, if it shall be necessary, having with thee the same reason which now thou usest for present things.” – Marcus Aurelius.
Overthinking is a kind of mental time travel. Half the trip goes backward to old mistakes, and the other half runs ahead to problems that may never show up. Either way, you’re spending today’s attention on a day that isn’t here yet. It wears you out fast.
Marcus had a plain answer to future worry. Whatever reasoning got you through this morning will still be with you when tomorrow’s problem actually arrives, so there’s no reason to solve it in advance.
When your mind jumps ahead, check whether there’s something you can do about it in the next few minutes. If there is, send the email or make the call.
If nothing can be done yet, put it down. You’ll handle it later with the same skills you have now, and those skills have gotten you through plenty already.
4. Stop Caring About What You Can’t Control
“The tranquillity that comes when you stop caring what they say. Or think, or do. Only what you do.” – Marcus Aurelius.
Few things feed a spiral as much as replaying a conversation. You wonder what someone meant by a comment and whether your joke landed or made you look like an idiot. You’ll never get a definitive answer. Other people’s opinions exist locked in their heads, and you don’t have the key.
Marcus wrote about the relief of letting all that go. His attention went back to the one question he could actually answer, which was whether his own conduct had been fair. So draw the line clearly. Your words and choices belong to you, while someone’s reaction to them belongs to that person.
This takes practice if you’re someone who cares a lot about being liked. The urge to replay things doesn’t vanish because you’ve decided it should. If you owe someone an apology, give it. If you don’t, stop auditing the conversation.
5. Cut Out Unnecessary Mental Noise
“Ask yourself at every moment, ‘Is this necessary?'” – Marcus Aurelius.
The mind collects problems the way a garage collects junk. One slightly awkward email can turn into a full evening of analysis if you let it. In the same passage, Marcus argued that most of what people say and do isn’t necessary. Cutting it frees up time and makes room for some peace.
A lot of mental noise is just rehearsal. You run through an argument you’ll never have or polish a reply to a comment nobody made. The question works just as well on thoughts. When a worry grabs hold of you, ask whether it will still matter in five days, and then ask about five years. Most worries don’t make it past the first checkpoint. Let those go and save your energy for the few that do.
Conclusion
None of these lessons require a philosophy degree. Marcus wrote them for himself, and he clearly needed them more than once, as the same ideas recur throughout Meditations.
Pick one to start with. The fact-versus-story split is probably the easiest, since you can test it the next time a vague message lands in your inbox. Your mind will still wander off sometimes. When it does, bring it back to what you can do today and let the rest sit where it is.