http://yourguidetogreatness.com/ Without a doubt, the number #1 question I get asked by clients is How do I break a bad habit like procrastination, worry, insomnia, negative thinking, smoking.... There are a million examples of ways that each one of us holds our own success back by doing an unproductive habit.
It has been scientifically proven that our brain circuits take engrams or memory traces, and produce neuro connections only if they are bombarded with the information for 21 days in a row. This means that our brain does not accept new data or habit changes unless they are repeated each day for at least 21 days, without missing a day.
