Design defaults so the cheap reward is not one tap away

Make the high-stimulation input harder to reach than the activity you want.

Why it works

Behavior follows the path of least resistance. If the most stimulating option is the default — unlocked, pre-installed, autoplaying — it wins by friction alone, regardless of intention. Adding steps to the cheap reward and removing steps from the desired one tilts the same choice without requiring willpower in the moment.

How to do it

1. Increase friction on targets: log out, delete apps, leave the phone in another room, disable autoplay.
2. Decrease friction on replacements: leave the book open, lay out gym clothes, keep the instrument out.
3. Audit your defaults weekly — friction erodes as you re-install and re-login.

Evidence

Choice-architecture and friction research consistently shows that small changes to defaults and effort cost produce sizeable changes in behavior without changing preferences. (rct)

The default-effect literature is strong in general; the magnitude for any particular phone-friction tweak on your focus is individual and not precisely measured.

Sources

• Thaler & Sunstein, choice architecture / default-effect research

Common mistake

Relying on intention while keeping the app one tap away on the home screen. Friction, not resolve, is what reliably changes the moment-to-moment choice.