Dr. BJ Fogg runs Tiny Habits, a one-week course on building new habits. Since most of what we do is governed by habits, it is reasonable to study how to build new ones, or replace bad ones.
I have done his course before, and had success. I have been reading Free with Kristi and some good friends of ours, and want to work more small but substantive things into my life. I am starting small, with the recommended item of flossing being Tiny Habit #1. I want to learn the methodology before trying too many habits of my own.