- Friction is the effort required to perform a behaviour — and it predicts behaviour powerfully
- Reducing friction for good habits and adding it for bad ones reshapes defaults without willpower
- Even tiny friction changes can shift behaviour significantly over time
Friction is any obstacle between you and a behaviour — physical distance, preparation steps, number of clicks, temperature, effort, or social awkwardness. Even small amounts of friction can stop a habit from forming. Even tiny reductions in friction can make a habit significantly more likely.
This is one of the most actionable insights in behaviour science, and most people never apply it deliberately.
Low Friction Behaviours Become Defaults
Whatever is easiest in a given moment tends to happen. That's not weakness — it's a rational feature of a brain managing limited resources. Designing for low friction isn't a hack; it's working with how human behaviour actually operates.
Sleep researchers have found that having workout clothes laid out the night before meaningfully increases morning exercise rates. The behaviour didn't change. The motivation didn't change. One friction point was removed — and it moved the needle.
Adding Friction to Bad Habits
The same principle works in reverse. Adding even mild friction to an unwanted behaviour can significantly reduce it — not because the behaviour becomes impossible, but because the path of least resistance no longer points toward it.
- Logging out of social media apps between uses (adds friction: need to log in again)
- Keeping alcohol in an inconvenient cabinet rather than the fridge
- Leaving your phone charger in another room at night
- Using a smaller plate (reduces the ease of large portions)
None of these prevent the behaviour. They just make it slightly less automatic — which, for many habit loops, is enough.
Any habit that takes less than two minutes requires almost no friction management. Make the good habit start so small it takes under two minutes, and you eliminate most of the friction problem immediately.
Mapping Your Friction Points
For each habit you want to build, map every step between intention and action. Each step is a potential friction point. Your goal: eliminate as many as possible before the moment of decision. For a habit you want to break, identify which steps could be lengthened, delayed, or added to.
Friction Changes Are Environmental Changes
Most friction reduction is environmental — moving, removing, or rearranging things. That makes it durable. Unlike resolutions, the rearranged environment keeps working whether or not you're feeling motivated.
You cannot rely on always wanting to make the right choice. But you can ensure that the right choice is the easy one.