Heuristic
Use friction when intention keeps losing to one-tap access
Environment can carry part of the self-control load.
When it fits
- A digital-use goal is clear but the undesired action remains instantly available in every idle moment.
When to avoid it
- Friction can also block legitimate access; keep exceptions for safety, accessibility and essential tasks.
Why it matters
If planning alone does not change behavior, make the unwanted route less automatic: sign out, remove mobile data, move the app off the phone, add a blocker or require desktop access. Choose the smallest friction that changes behavior without blocking essential use.
An example
Move a distracting service to desktop-only access rather than relying on twenty daily decisions not to open it.
Check your result
The undesired behavior becomes materially less frequent without damaging necessary communication or work.
Keep this limit in mind
- Friction can also block legitimate access; keep exceptions for safety, accessibility and essential tasks.
Evidence and sources
A 2025 planning RCT showed intention/planning alone did not significantly reduce total smartphone usage, while a separate 2025 RCT found a stronger environmental block changed outcomes.
Friction can also block legitimate access; keep exceptions for safety, accessibility and essential tasks.
Planning a digital detox: Findings from a randomized controlled trial to reduce smartphone usage time · See source record