My Inspirations: How to create a habit by Charles Duhigg

The key to forming a new habit and making it stick is to take advantage of the 3-step neurological process that creates a habit. First, choose a cue, like leaving your running shoes by the door, then pick a reward — say, a piece of chocolate when you get home from the gym. Eventually, when you see the shoes, your brain will start craving the reward, which will make it easier to work out day after day.