Overview
Charles Duhigg explores the science of habit formation in individuals, organizations, and societies. He reveals the neurological loop at the core of every habit — cue, routine, reward — and shows that understanding this loop is the key to exercising more, eating healthier, and transforming organizations.
Duhigg, then a New York Times reporter, published The Power of Habit in 2012. The book popularised the cue-routine-reward loop as a model for habitual behaviour, drawing on research by Ann Graybiel at MIT and others. It provided much of the scientific grounding that Atomic Habits later built on, and the two books are often recommended together.
Key Ideas
The habit loop
Every habit follows a three-step pattern: cue, routine, reward.
Keystone habits
Some habits have a ripple effect, triggering positive change in other areas of life.
Change the routine, keep the cue and reward
You cannot extinguish a bad habit; you can only change the routine that follows the cue.
Willpower is a muscle
Willpower can be strengthened through practice but also fatigued through overuse.
Who should read this
Readers who want the research story behind habit change — how habits work in the brain, how companies exploit them, how societies form around them. The book is organised in three widening layers: individual, organisational, societal, and each one contains memorable stories (Pepsodent, Alcoa, the Target pregnancy algorithm).
Who might skip it
Skip if you've already read Atomic Habits and want new material; James Clear covered the individual-application angle more practically. Also skip if you want a manual — Duhigg is a journalist, and the book is structured around stories rather than step-by-step advice.
The verdict
The better book for understanding habits; Atomic Habits is the better book for installing them. Duhigg's storytelling is unusually clean, and the Alcoa chapter (about keystone habits) is a case study I've returned to many times thinking about organisational change. Worth reading even if you think you already know the material.
"Change might not be fast and it isn't always easy. But with time and effort, almost any habit can be reshaped."
— Charles Duhigg, The Power of Habit
If you liked this
Smarter Faster Better, Duhigg's follow-up, is broader and less focused. Atomic Habits if you want the tactical companion.