Concept
66 days
A new habit takes about 66 days on average until it feels automatic, not 21, as people often claim.
- 1
Set up the habit
One question per step: who do you want to be? When and where will you do it? And what is the smallest thing that still counts, say just two cards?
Set up the habit
One question per step: who do you want to be? When and where will you do it? And what is the smallest thing that still counts, say just two cards?
- 2
Get reminded, check it off
At the time you chose, the reminder arrives with your minimum and your place. One tap on “Yes, done”: every check-off is a vote for the person you want to be.
Get reminded, check it off
At the time you chose, the reminder arrives with your minimum and your place. One tap on “Yes, done”: every check-off is a vote for the person you want to be.
- 3
Keep going
The grid shows every day, the phases show the way: building, forming from 7, established from 30, anchored from 66. Skipping once does not break the streak.
Keep going
The grid shows every day, the phases show the way: building, forming from 7, established from 30, anchored from 66. Skipping once does not break the streak.
Remember how you learned to ride a bike? At first you had to think about everything at once. At some point it just worked. In the same way, a new habit gets easier over time, until you barely have to think about it.
The famous 21 days go back to the plastic surgeon Maxwell Maltz. In his 1960 book “Psycho-Cybernetics” he wrote that it takes a minimum of about 21 days for people to get used to a changed picture of themselves. As the story got passed on, a minimum simply turned into exactly. In 2010 a team led by Phillippa Lally in London really put it to the test. Volunteers practiced a new habit every day for twelve weeks. On average it took 66 days until it felt automatic, anywhere between 18 and 254 days depending on the person.
Every repetition at the same place and the same time makes the path in your head a bit firmer. At first you make quick progress, later the steps get smaller. The good news from the study: missing a day once hardly set people back at all.
Mnemorya guides you through the phases of a new habit. In the first days you build it up, after 7 days the strengthening begins, after 30 days it counts as established. You see your days as a calendar grid, box by box.
The research behind it
The studies this method rests on. Each one is verifiable through its DOI — looking them up is very much the point.
On average it took 66 days for a new habit to feel automatic, with big differences between 18 and 254 days; one missed day hardly did any harm.
How are habits formed: Modelling habit formation in the real world. European Journal of Social Psychology, 40(6), 998-1009.
doi.org/10.1002/ejsp.674From his work as a surgeon, Maltz described that people need a minimum of about three weeks to get used to a new picture of themselves. That is where the 21-day myth came from.
Psycho-Cybernetics. Prentice-Hall.
The article explains simply how habits form through repetition and gives the roughly 66 days from Lally's study as a realistic guideline.
Making health habitual: the psychology of ‘habit-formation’ and general practice. British Journal of General Practice, 62(605), 664-666.
doi.org/10.3399/bjgp12X659466
Keep watching
See the idea in motion.
Selected videos for going deeper. Each link opens the original creator on YouTube.
