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9 Thinking Rituals You Can Steal From History's Greatest Minds

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Key takeaways

Wellness and Self-Improvement

Key wellness, self-care, and productivity strategies (from historical “thinking rituals”)

1) Protect your time for deep thinking (create the right mental conditions)

System 1: “Space-time oasis” (John Cleese)

  • Choose one problem and write it at the top of the page.
  • Book 90 minutes with a visible start/end time (clear end is essential).
  • Remove distractions: phone in another room, door closed.
  • Expect “noise” (irrelevant thoughts) for the first ~30 minutes—sit still and let it pass.
  • When you get the first answer, write it down and continue (don’t judge it as “too obvious”).
  • Stop exactly when the alarm goes off.
  • Reserve the next 90 minutes the following week for the same problem. Use successive sessions to uncover the real obstacle.

System 2: Time for big thoughts (Richard Hemming)

  • Set one consistent weekly slot (same day/time) and protect it completely.
  • Keep a page of 3–5 “big questions” you rarely have time to address.
  • Each week: pick one question and either discuss with a colleague or write during the slot.
  • End with a reflective sentence: “What would I do differently next week if this were true?”
  • Example pattern: the “question” becomes actionable only after several weeks of repeated review.

2) Load the problem into the subconscious instead of forcing it in real time

System 3: “Hammock” (Rich Hickey)

  • Write the problem in one sentence on one page.
  • List:
    • what you know
    • what you don’t know
  • Write constraints + a first rough sketch.
  • Stop working and close the notebook (overnight; for big tasks, three nights).
  • During downtime, capture emerging ideas under the sketch and allow your critical mind to evaluate them after.

System 4: Six notebooks and a bathtub (Agatha Christie)

  • Place cheap notebooks around the house (or a note on your phone).
  • Use the “recording” test: can you capture an idea in < 5 seconds, anywhere?
  • When an idea comes: write it immediately (no organization needed).
  • Pick one boring daily task and pair it with an open problem.
  • During routine: no extra audio/input (no podcasts/audiobooks)—just the problem + routine.
  • Once a month, reread notes and consolidate relevant ideas onto one page.

System 5: Solve the “stupid” version (Claude Shannon)

  • Write the problem in one sentence.
  • Strip away conditions until it becomes trivial (“eliminate everything except the essential”).
  • Solve the trivial version.
  • Add one condition back at a time, adjusting the solution—repeat until you reach the original problem.
  • If stuck: rewrite using three different “dictionaries” (different metaphors/industry language) to see the essence differently.

3) Use writing to correct thinking (emotional regulation + better decisions)

System 6: The Golden Rule (Darwin)

  • Create a page with your current belief at the top.
  • Whenever you encounter contradictory facts/opinions, record them on the same day.
  • Every two weeks: read the “objections/contradictions” page before the belief/plan page.
  • If multiple entries point the same way (e.g., three entries), change the plan.
  • Core principle: don’t rely on memory being fair—use writing as a “mechanical fuse.”

System 7: Unsent letter (Lincoln)

  • When angry with someone:
    • Write the full letter without editing (name the person; be complete).
    • Do not send it—put it in an “unsent” folder.
    • Wait 2–3 days.
    • If action is still needed, write a shorter second version and send.
  • Core principle: give anger a channel, then let time reduce the damage of overconfident emotions.

System 8: Weighing reliability (Ray Dalio)

  • Before accepting advice, rate each person with two questions:
    • Have they done it successfully at least three times?
    • Can they explain the cause-and-effect (not just that it worked)?
  • Use a weighted outcome:
    • Two check marks = full weight
    • One check mark = half weight
    • No check marks = politely listen and move on
  • Decide using weighted assessments, not loudness, proximity, or emotional closeness.

System 9: Morning rehearsal (Marcus Aurelius)

  • Every morning, for the difficult people you expect to meet:
    • write the person’s name
    • write the behavior you expect
    • write the response you will choose while calm
  • Every evening: check off what actually went according to rehearsal.
  • Example technique: decide a firm, non-escalating phrase in advance for recurring disrespectful comments—then use it as written.

Presenters / sources mentioned

  • John Cleese
  • Richard Hemming
  • Rich Hickey
  • Agatha Christie
  • Claude Shannon
  • Charles Darwin
  • Abraham Lincoln
  • Ray Dalio
  • Marcus Aurelius

Original video