My mom loved good, memorable quotes and used to write them into her newsletters. One was from Ralph Waldo Emerson: "Once you make a decision, the universe conspires to make it happen." I think that one has stayed around since the 1800s because everyone who tries the advice finds it to be true after a little while. In this century, it's referred to as quantum physics. I'd just call it being positive.
Three weeks into my NutriSystem program, I had lost about six pounds. It was a miraculous mood booster, especially because my knees hurt less with each melting pound. Once I started to feel a little lighter on my feet I wanted to start toning up, too.