The 100 Day Challenge

I like this good idea to develop any positive habit.

The 100 Day Challenge:
... called the 100 Day Challenge. Here’s how it works: for 100 days, focus on engaging in one activity for 100 days in a row. By the end of the 100 days that daily activity will become a daily habit. Engaging in an activity for 100 day helps create the neural network infrastructure necessary to forge a habit.

Source:
http://richhabits.net/100-day-challenge/