Is this from the tinyhabits program? It sounds like BJ Fogg's method for creating new habits.
It sounds kind of corny, but it's effective. The idea is to get your brain to automatically associate a new habit with a really tiny action that will instantly give you a reward. So if you wanted to create a habit of brushing your teeth after getting up, you'll do it without much though even thought you only consciously brushed one tooth when you were trying to create the habit.