I've been interested in this subject for quite some time now. I heard about this magic 21 number before. So, I did a quick search and found this out online. I'll put this as a reminder for myself. Here is a related post from zenhabits "In order to ensure behavior change, experts agree that it takes a minimum of 21 days to change a behavior. Again, look at the date you are planning on changing your habit. Count ahead 21 days and mark that date down. Now, make a commitment that you will follow your plan for 21 days. Helpful Suggestions Your target date has arrived. It is the first day of your 21-day cycle. Here are some helpful suggestions for habit change: Write down your goal. There is magic in the written word when it applies to you. Experts recommend stating your goal in positive terms, such as "I want to be lean and physically fit," instead of "I've got to get this flabby body out there huffing and puffing." So, begin with writing down, as a pos