Keystone Habits
For anyone trying to fix ten things at once and wondering if there is one change that would make the rest easier.
A keystone habit is a single habit that sets off a chain reaction, making other good habits easier without extra effort. Common examples are regular exercise, a consistent sleep and wake time, planning your week, and removing something that drains you, such as alcohol or late-night scrolling. To find yours, look for the one change that would improve your energy, time or self-respect the most, and start there.
A few years ago, during one of the hardest seasons of my career, I made a decision that felt small at the time: I stopped drinking. It started as a temporary way to stay focused. It turned into months and eventually into years.
It was one change. But I felt healthier, and I exercised more.
Becoming the person I wanted to be was not just about what I was adding to my life. Sometimes, it was about what I was willing to remove from it.
The term keystone habit was popularized by Charles Duhigg in The Power of Habit. Research supports the idea. In studies by Megan Oaten and Ken Cheng, people who started a regular exercise program also reported smoking, drinking and spending less, and keeping up better with study and household routines, even though no one asked them to change those things.
Change one thing well, and other things start to follow.
How to find and build your keystone habit
List what you want to change
Health, time, focus, relationships, money. Get it all on paper so you can see the patterns.
Look for the common root
Ask: what one thing, if it changed, would make several of these easier? Poor sleep, no exercise, a drinking habit or an unplanned week often sit underneath many other problems.
Pick one
Choose the change that would improve your energy, time or self-respect the most. One keystone habit done well beats five habits started at once.
Make it small and specific
“Exercise more” is vague. “Walk 20 minutes after dinner” is a habit. The clearer the action, the easier it is to repeat.
Protect it for 90 days
Keystone habits work through repetition. Give yours a full season before judging it, and watch for the other changes that start without you forcing them.
Sometimes, it’s about what you’re willing
to remove.
Common examples of keystone habits
Regular exercise. A consistent sleep and wake time. A weekly planning session. Eating meals at home. Making your bed. Tracking your spending. Removing alcohol or late-night phone time. The best one for you is the one that touches the most areas of your life.
Related reading: How to Build Good Habits, The Weekly Reset and How to Build a Morning Routine You Will Keep.
Common questions
What is a keystone habit?
A keystone habit is a single habit that triggers a chain reaction, making other positive habits easier. The term was popularized by Charles Duhigg in The Power of Habit.
What are examples of keystone habits?
Common examples include regular exercise, a consistent sleep schedule, weekly planning, family dinners, making your bed, tracking spending and removing a draining habit such as drinking or late-night scrolling.
How do I find my keystone habit?
List the habits you want to change, look for the one change that sits underneath several of them and start with that single habit.
How long does it take for a keystone habit to work?
Give it at least 90 days. The ripple effects usually appear gradually as the habit becomes automatic.
Find the one habit underneath several of your problems, make it small and specific and protect it for 90 days.
You Are Capable
of More.
Ten principles for becoming the person you know you are capable of being, built from real stories of people who doubted themselves and did it anyway. Winner of the How-To category at the 2026 Paris Book Festival.
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