Tranquility by Tuesday
A 2022 book by Laura Vanderkam based on a time diary study of 150+ people who learned nine time management rules over nine weeks, showing how to build a resilient schedule with opportunities for joy, nourishment, and fulfillment through strategies like planning on Fridays and the 'three times a week is a habit' principle.
Last updated: 2026-03-19 01:01
Overview
Tranquility by Tuesday is a time management book by Laura Vanderkam based on a time diary study of over 150 people who learned nine time management rules over nine weeks. The book launched on October 11th, 2022.
Core Philosophy
To make time for what matters, you need a resilient schedule, not a perfect schedule. Vanderkam shares nine strategies for building opportunities for joy, nourishment, and fulfillment into your week, going beyond typical time management advice to show how real people changed their lives using these rules.
The Nine Rules
1. Give Yourself a Bedtime
Go to sleep at about the same time every night unless you have a good reason not to.
2. Plan on Fridays
Think through your weeks, holistically, before you're in them.
3. Move by 3 P.M.
Do some form of physical activity for ten minutes in the first half of every day.
4. Three Times a Week Is a Habit
Consistent actions don't need to happen daily to become habits.
5-9. Additional Rules
The book also includes rules about adventures (one big, one little), batching tasks, and "effortful before effortless."
Research Foundation
The book is based on a structured experiment where participants tested these nine rules over a nine-week period, tracking their experiences through time diaries and providing feedback on what worked.
Key Insight
The book emphasizes building resilience into your schedule rather than seeking perfection, recognizing that life is unpredictable and plans need flexibility while still maintaining structure.
Target Audience
Ideal for people who want evidence-based time management strategies that have been tested by real people in real-life situations, rather than theoretical advice.
Format
Published in October 2022, available in hardcover, paperback, ebook, and audiobook formats through Penguin Random House.
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