What is the defining question of the ONE Thing concept?

What is the defining question of the ONE Thing concept?

• A. What is the ONE Thing I can do such that by doing it everything else will be easier or unnecessary?
• B. Which habit should be added to improve productivity?
• C. What is the maximum number of tasks to complete in a day?
• D. Which task should be deprioritized to free up time?

Answer: (A)

Centering on the most important action that dramatically moves you toward a goal, the ONE Thing question asks: What is the ONE Thing I can do such that by doing it everything else will be easier or unnecessary? This exact phrasing captures leverage and prioritization—finding the single task whose completion makes all other tasks simpler or irrelevant, which sharpens focus and makes progress more efficient. That’s why it’s the best answer: it embodies the idea of choosing the highest-impact action first, rather than adding habits, trying to do more tasks, or merely deprioritizing some work. The other options describe separate ideas (adding a habit, counting tasks, or deprioritizing) but don’t pinpoint the central question that drives the ONE Thing approach.

Centering on the most important action that dramatically moves you toward a goal, the ONE Thing question asks: What is the ONE Thing I can do such that by doing it everything else will be easier or unnecessary? This exact phrasing captures leverage and prioritization—finding the single task whose completion makes all other tasks simpler or irrelevant, which sharpens focus and makes progress more efficient.

That’s why it’s the best answer: it embodies the idea of choosing the highest-impact action first, rather than adding habits, trying to do more tasks, or merely deprioritizing some work. The other options describe separate ideas (adding a habit, counting tasks, or deprioritizing) but don’t pinpoint the central question that drives the ONE Thing approach.