Creating an everyday habit isn’t quite trivially easy, but entering a number on a chart is about as easy as it gets. There’s something immediately satisfying about it, regardless of the numbers. It’s interesting, and often fun, to see what in your life affects your numbers, and what your numbers affect in your life.

Just recording the numbers—without striving to change anything about what you’re tracking—almost always creates a sustainable, healthy transition to a better way of doing things.