Chapter 05 · Soul
Write It Down: Marcus Aurelius Had a Bad Day Too
Giving a hard feeling a clear name can quiet the brain's alarm. Three honest lines on paper beat keeping everything spinning in your head.
The most powerful man in Rome kept a private notebook that no one else was meant to read. Marcus Aurelius's Meditations — literally To Himself (Ta eis heauton) — begins Book 2 with a blunt morning rehearsal for difficult people and a reminder that we are made for cooperation.
I am a researcher in psychology and nutrition for high-performing athletes, published on behalf of my universities, with a previous research master's in neuroscience and human movement at a medical university in the Netherlands. The British Olympic team commissioned research from me and my supervisor in England.
Key ideas
- Private notes are for clarity, not performance. Marcus wrote to steady himself before the day began, not to publish a polished book.
- Naming a feeling lowers the volume. Moving an emotion from a vague swirl into a single concrete word changes how the brain responds to it.
- Writing is not magic, just honest sorting. Separating what happened from what sits inside your control tomorrow turns rumination into a plan.
The evidence
- **Affect labelling in the brain (Lieberman et al., 2007, Psychological Science):** In an fMRI task, putting a word to an emotional face reduced activity in the amygdala (the brain's threat alarm) and increased activity in the right ventrolateral prefrontal cortex. That lab task is not identical to journaling, so we do not claim it proves journaling rewires the brain overnight.
- **Expressive writing meta-analysis (Frattaroli, 2006, Psychological Bulletin):** Across 146 randomised experimental-disclosure studies building on Pennebaker and Beall (1986), structured writing showed a small but real average benefit (r = .075) across psychological and physical outcomes.
The takeaway
Tonight, write three short lines on paper, then close the page:
1. What happened today. 2. The feeling, in one word. 3. One thing in my control tomorrow.
Free tools
- Meditations" target="_blank" rel="noopener noreferrer">http://classics.mit.edu/Antoninus/meditations.2.two.html">Meditations, Book 2 (George Long translation, MIT Internet Classics Archive) — checked 12 November 2026 (Europe/London): public-domain text, free with no account or payment.
This is educational, not personal medical advice. If you are struggling, please speak to a GP or a qualified professional. In the UK, Samaritans are available day or night on 116 123, or at samaritans.org.