I’m not sure where the 21-day rule originates, but I found it on line listed as first published in a book called “Psycho-Cybernetics,” a self-help book first published in the 1970s. I’d always heard it was a month, until I looked it up. It says, “You can create or break a habit in just 21 days.”
This is a nice article, telling you how to break a bad habit,
http://www.huffingtonpost.com/2015/01/12/break-bad-habits_n_6438748.html
I’m not convinced any method works. I’ve given up ice cream for over a year at a time, but it is still my go to treat when I’m blue. My husband is a lifelong smoker, a real bear when he’s quitting. In forty-nine years of marriage he has tried to quit or quit at least forty-eight times. Temptation or stress appears, back to half a pack a day.
Here’s an equally nice article with five rules on how to make a good habit.
http://99u.com/articles/17123/5-scientific-ways-to-build-habits-that-stick
I think this one is possible. After two months of writing everyday, first in JuNoWriMo and then CampNaNoWriMo, I’ve written the first five days of this month with out any hesitation, as though I have an unbreakable habit. Looked around and found a site to post my word count on too, for my needed pat on the head. It is “My 500 words.” I do not intend to drop my count though.
Now if I could just learn to write in the morning, or start at noon, or something besides reading the Internet for two hours and then about ten or so at night starting to write, I’m sure I would double my word count. I’m still at camp speed, over a thousand and I’m happy. NaNoWriMo is 1667 words a day, every day, so I need to build up a little before November.
Some days I think I cannot think of a thing to write. But still I write. I’m praying the old rules are true. “Write with your heart, edit with your head.” Looked for an image to post, thought Hemingway said it, might be Elmore Leonard. This Hemingway quote is close.
All I know about writing can be summarized in these last two quotes.