- Published
- Updated July 13, 2026
- Life by Design > Mental models > One Thing Principle
Mental Models for solopreneurs
How to use One Thing Principle by Gary Keller
1 Mindset shift
2 When to use it
3 How to use it
dividing our time and energy between multiple goals is not effective. Identify the highest-impact action and put everything else on pause.
During daily or weekly planning.
Ask, "What's the one thing that makes everything else easier or unnecessary?" Do it first.
Nicholas Robb
Founder, Design Hero
Author of Life by Design
Nicholas@lifebydesign.online