Keystone Habits: The Cornerstones of Your Behavior

This article is an excerpt from the Shortform book guide to "The Power of Habit" by Charles Duhigg. Shortform has the world's best summaries and analyses of books you should be reading.

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What are keystone habits? How do keystone habits affect the rest of your lifestyle?

Keystone habits are habits that create a domino effect. These habits can influence you to form other habits, and are the basis for a lot of behavior.

Read more about keystone habits and how they work.

Keystone Habits

Certain habits can have a domino effect – get one habit right, and many other good habits fall into place naturally. These keystone habits act as massive levers.

A 2009 study on weight loss tried to get obese people to follow a simple habit – write down everything they ate, at least one day a week. While difficult at first, it became a habit for many. Unexpectedly, this small habit rippled throughout their diet. When forced to study what they ate, the study participants couldn’t help noticing when they snacked absentmindedly, or when they had unhealthy dinners. They then proactively started to plan future meals so that when they wanted a snack, they reached for an apple instead of a candy bar.

The keystone habit of keeping a food journal created an environment for more healthy habits to thrive. Eventually, participants who kept a journal lost twice as much weight as the control group.

How do you find a keystone habit? Find an area where you can have small wins. By achieving small wins, you create forces that favor another small win, and that in turn encourages the next small win, and so on, creating a virtuous cycle. These wins create a culture of change, and create new structures that help new habits grow and thrive.

(Shortform note: The keystone habit concept feels anecdotal in the book due to lack of scientific evidence. It can make sense intuitively, though. When you’re stuck in a rut, it’s often easy to resign yourself to thinking you’re incapable of change, that you’re a lazy good-for-nothing. By achieving small wins, you can reverse this resignation – you can convince yourself that you ARE capable of change. This courage can empower you to take bigger and bigger steps.)

Keystone Habits: The Cornerstones of Your Behavior

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  • The 3 steps to change your habits
  • Why habits are at the root of success in football
  • How social movements are just an expansion of habits from individuals to communities

Carrie Cabral

Carrie has been reading and writing for as long as she can remember, and has always been open to reading anything put in front of her. She wrote her first short story at the age of six, about a lost dog who meets animal friends on his journey home. Surprisingly, it was never picked up by any major publishers, but did spark her passion for books. Carrie worked in book publishing for several years before getting an MFA in Creative Writing. She especially loves literary fiction, historical fiction, and social, cultural, and historical nonfiction that gets into the weeds of daily life.

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