Writing

Habits, sleep, and what the numbers support

Longer pieces on the questions this product exists to answer — written to be useful whether or not you ever use it.

Do habit trackers actually work?
The honest answer is: partly, for reasons that have little to do with the features most habit apps compete on.
5 August 2026 · 6 min read
How long does it take to form a habit?
The popular number is wrong, the researched number is widely misquoted, and the spread around it matters more than the average.
5 August 2026 · 5 min read
The link between sleep and mood, and how to test it on yourself
That sleep affects mood is well established. What that means for you specifically — how much, at what threshold — is not, and is testable.
5 August 2026 · 6 min read

Give it a month and see what it finds

Twenty paired days is the minimum before the statistics will say anything at all. That is roughly three weeks of ordinary use.

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