Timeboxing by Marc Zao-Sanders
Book and methodology by CEO Marc Zao-Sanders establishing timeboxing as one of the most effective productivity techniques, based on research showing it outperformed 100 other time management methods in effectiveness.
Last updated: 2026-03-19 03:26
Overview
"Timeboxing" is a book and methodology developed by Marc Zao-Sanders, CEO and co-founder of Filtered. Based on his research, timeboxing ranked as the most useful technique in a survey of 100 productivity methods.
What is Timeboxing?
Timeboxing is the practice of allocating a fixed amount of time to each task, then stopping when the time is up. Unlike traditional to-do lists that remain open-ended, timeboxing creates clear boundaries around work.
Research Foundation
In a 2018 Harvard Business Review article, Zao-Sanders reported that timeboxing ranked as the most useful technique among 100 productivity methods tested. The research showed that setting fixed time limits:
- Creates urgency and focus
- Reduces procrastination
- Improves time estimation skills
- Makes large projects manageable
Key Principles
- Decide time limits in advance to avoid micro-decisions during work
- Block time on your calendar to create commitment
- Match time to importance not just to perceived duration
- Stop when time expires even if incomplete
- Review and adjust to improve future time estimates
Benefits Over Other Methods
- More specific than traditional time blocking
- More flexible than rigid scheduling
- Better for estimation than open-ended tasks
- Creates natural time tracking data
The Book
Zao-Sanders' book provides:
- Scientific evidence for timeboxing effectiveness
- Practical implementation strategies
- Solutions to common challenges
- Integration with other productivity methods
Application
Timeboxing naturally creates time tracking data as you must decide in advance how long tasks should take, then record actual time spent.
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