Singh explained that the idea of 21 days comes from the 1960 book Psycho-Cybernetics by plastic surgeon Maxwell Maltz, who observed that his patients took about 21 days to get used to their new ...

We all have that little habit we'd like to get rid of: snacking in front of the TV, scrolling on our phone before going to ...

Maxwell Maltz, the author of "Psycho-Cybernetics," called this tendency the "Snap-Back Effect." He used the analogy of a rubber band: you can stretch it only so far before it snaps back to its ...