Duhigg's book did something useful. It took twenty years of habit research — most of it locked inside academic journals — and gave it a single accessible frame: the habit loop. Cue, routine, reward. The book has sold millions of copies because that frame is genuinely powerful. It is also, the researchers will tell you, a simplification.
The three books below give you the rest of the picture: the scientist whose lab Duhigg drew on, the writer who thinks habit-building is mostly the wrong question, and the psychologist whose work on belief about ability turned out to matter more than any technique.
Good Habits, Bad Habits — Wendy Wood
Farrar, Straus and Giroux, 2019
Wood is the researcher Duhigg cites. She has spent thirty years at USC running the habit lab — the actual experiments measuring how habits form, how strong they get, how environment dominates intention. Her book is the practitioner version of the research. The headline finding: about 43% of daily behaviour is habitual, almost none of it is willpower-driven, and the people who succeed at change do it by editing context, not by trying harder.
We are not what we repeatedly do. We are what our environments allow us to do repeatedly.
Where Duhigg gives anecdote, Wood gives the studies. Where Duhigg suggests, Wood specifies. If you finished The Power of Habit feeling that the loop was elegant but underdetermined, this is the book that supplies the rest.
The Power of Less — Leo Babauta
Hyperion, 2009
Babauta runs Zen Habits, one of the early and quietest blogs in the productivity space, and his book is the counter-argument to the optimisation literature. The premise is single-tasking, six chosen commitments, one habit at a time, and a deliberate refusal to track or quantify the work. The voice is unfashionably calm. There are no streaks in this book. There is no fire icon. There is the suggestion that doing fewer things slowly is the entire trick.
Identify the essential. Eliminate the rest.
Read after Duhigg as a corrective. Most habit literature assumes you want more habits. Babauta is honest that the deeper goal is usually fewer, better ones — and that the apparatus of tracking, scoring and streak-keeping is itself a habit worth examining.
Mindset — Carol Dweck
Random House, 2006 (updated 2016)
Dweck is the Stanford psychologist whose work on "fixed" versus "growth" mindset reframed how a generation thought about change. The book's argument is narrow and durable: people who believe ability is malleable approach difficulty differently, persist longer, and end up further along. It connects to habits because the deeper variable underneath any behaviour-change project is the story you tell yourself about whether you can change at all.
The popular version of growth mindset has been flattened into a slogan. The book is more careful than the slogan. Read it for the original research, and for the chapter on what happens when growth mindset is mistaken for cheerleading — which Dweck herself has spent the last decade trying to correct.