A method for ruthless focus. Ask the focusing question, block time and protect momentum on the work that matters most.

This book drilled focus into my weekly planning. It made me ask: what’s the one thing that makes everything else easier?
It helps eliminate distraction and align effort with goals.
For anyone feeling overwhelmed by multiple priorities and seeking to identify and focus on the single most important thing they can do to achieve their biggest goals. It's a powerful guide for increasing focus and productivity.
Focus creates momentum.
Multitasking is a productivity lie.
Ask the focusing question daily.
Gary Keller
2013
Introduction
The One Thing by Gary Keller and Jay Papasan presents a transformative approach to achieving extraordinary success by focusing on a singular priority at any given time. The book challenges conventional beliefs about productivity and success, offering a clear path to personal and professional growth through prioritisation, disciplined focus, and intentional living.
Keller and Papasan identify six common misconceptions that hinder productivity and dilute focus:
By addressing these lies, Keller encourages readers to discard ineffective habits and adopt a mindset that embraces simplicity and focus.
At the heart of the book lies the focusing question:
“What’s the ONE thing I can do such that by doing it, everything else will be easier or unnecessary?”
This question helps identify the highest-priority task that drives meaningful progress. By narrowing focus to a single impactful action, individuals can achieve exponential results.
Keller introduces the concept of the domino effect, where small, focused actions create a chain reaction, leading to significant achievements over time. Success is built sequentially, not simultaneously, and each accomplishment builds momentum for the next.
Time blocking involves dedicating uninterrupted time to focus solely on the ONE thing. This strategy guards against distractions and ensures consistent progress on high-priority tasks.
The authors stress that extraordinary results stem from living with:
To achieve success, individuals must commit to:
Keller identifies four obstacles that undermine focus:
Addressing these challenges ensures a clear path to extraordinary results.
Keller and Papasan conclude that success is not about doing more but doing what matters most. By focusing on the ONE thing, individuals can simplify their lives, maximise productivity, and achieve extraordinary results.
The One Thing is a powerful guide for anyone seeking clarity, focus, and purpose in their pursuit of success.

Greg McKweon
Rules for choosing fewer, better projects. Protect time, set trade offs and align efforts with clear goals and measures.
Identify and leverage limitations as forcing functions that drive creative problem-solving and strategic focus.
Systematically rank projects and opportunities using objective frameworks, ensuring scarce resources flow to highest-impact work.
Prioritise tasks systematically by sorting them into urgent-important quadrants, focusing effort on high-impact activities.
Block extended time for cognitively demanding tasks requiring sustained focus, maximising valuable output whilst minimising shallow distractions.