We picked a fight with a statistic everyone repeats

We picked a fight with a statistic everyone repeats
There's a productivity statistic — you've seen it, the "it takes 21 days to form a habit" one — that's quoted endlessly and supported by almost nothing. Our client, a habit-tracking app, sat in exactly the territory to challenge it.
The angle was a public myth-bust. We ran our own analysis on anonymized in-app data — hundreds of thousands of habit attempts — and found the real average was closer to two months, with enormous variation. Contradicting a beloved myth is irresistible to journalists, because the correction is itself the news.
The pitch was a single provocative line: "The 21-day habit rule is wrong, and we have the data to prove it." Confrontation, backed by numbers, gets opened.
Result: 19 placements, several from outlets that had previously published the myth and wanted to set the record straight, 47 referring domains. The data page became a citation magnet — other writers started linking it as the source for debunking the old claim, earning passive links for months.
A science journalist replied: "I've quoted the 21-day thing for years. If you can disprove it, that's my next column."
Lesson: A widely-repeated, weakly-sourced myth in your niche is a gift. Disprove it with real data and you don't just earn coverage — you become the citation everyone uses to correct it.