New Research Debunks 21-Day Habit Formation Myth

A study from the University of South Australia reveals that forming lasting habits typically takes 2-5 months, with significant variability among individuals.

The widely held belief that habits form in 21 days is not supported by evidence, according to a systematic review of 20 studies involving over 2,600 participants.
Researchers found that the median time to establish a habit is 59-66 days, though it can range from as little as 4 days to as long as 335 days depending on the individual and behavior.
Morning routines tend to foster stronger habit formation due to higher energy levels and fewer distractions, while self-chosen habits are more likely to succeed than assigned ones.
Simple actions with clear triggers, such as flossing, are easier to make automatic compared to complex behaviors like regular exercise, which require more time and consistency.
The study emphasizes the importance of long-term planning and consistency in building habits, suggesting strategies like integrating habits into daily routines and creating supportive environments.