Why To-Do Lists Fail (21,655 Tasks of Data)
I counted every task in the Loggd database. Across 21,655 one-off tasks, 35.9% got completed, and the ones that did not are a median of 56 days overdue.
Original analysis from real habit-tracking data across thousands of Loggd users.
I counted every task in the Loggd database. Across 21,655 one-off tasks, 35.9% got completed, and the ones that did not are a median of 56 days overdue.
We measured the "never miss twice" rule against 2,066 real habits. The second missed day is the steepest single drop, but there is no cliff at two.
Everyone says start with one habit. Across 7,877 habits and 4,219 people, the one-habit accounts have the shortest streaks. Here is why that is not a reason to add more.
Loggd data on 7,800+ habits shows most are never checked a second time. Here is which habits die fastest, and when they actually die.
We analyzed 6,700+ habits from 3,600+ Loggd users. Here are the most-tracked habits in 2026, and which ones people actually stick with.
The famous study says 66 days, not 21. But real data on thousands of habits shows almost nobody gets that far, and why the first two weeks are the whole game.
We analyzed 4,000+ people and 45,000+ habit check-ins. The data reveals an uncomfortable truth: most habits die in days, and the ones that last are the automatic ones.
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