The central idea in The Power of Habit is that all habits fall into the pattern of “cue-habit-routine”. If you can identify the cues and triggers for a routine of yours, you can change it. That’s basically the book.

Duhigg is a fluid writer and the the book starts off strong, but I found myself skipping many of the later chapters. Too many far-fetched examples to make the same point. And even then, for example when discussing Febreze, the story doesn’t match with my own reality. He claims that Febreze fixes all smells, but it wasn’t until the marketers associated it with a cue, it’s smell as a post-cleaning reward, that adoption took place. This doesn’t seem true to me. Febreze does not clean all smells!

The book is worth a look to think more deeply about habits and how they form, but frustratingly falls into the bucket of standard pop-science books that have a simple idea and play a bit fast-and-loose with anecdotes to derive a book-length treatment.