Day 4 of 90 · Start small
Anchor it to something you already do
“I already brush my teeth every night without thinking. Now my stretch comes straight after.” — Kai

Today's action · 5 min
Pick one thing you do every single day without fail, like brushing your teeth or boiling the kettle. Do your tiny habit straight after it today.
Why it works
In a small study by Judah, Gardner and Aunger, people asked to floss after brushing built stronger flossing habits than those who flossed before, and were still flossing more months later. An existing routine gives a new habit a reliable cue. It was an exploratory study, so treat it as a helpful pointer rather than a law.
Source: Forming a flossing habit: an exploratory study of the psychological determinants of habit formation (Judah, Gardner & Aunger, 2013)
Educational content, not medical advice. If you are struggling, contact a qualified professional (Lifeline 13 11 14 in Australia, 988 in the US).