When you’re starting a new habit, it’s important to keep the behavior as easy as possible so you can stick with it even when conditions aren’t perfect. This is an idea we covered in detail while discussing the 3rd Law of Behavior Change. Once a habit has been established, however, it’s important to continue to advance in small ways. These little improvements and new challenges keep you engaged. And if you hit the Goldilocks Zone just right, you can achieve a flow state.fn1