I have heard of it, but I don't believe it. It is more of a thought exercise.
While striving to be better is important, I want people to be happy with where they are. Some people only think that by getting to the next place in life is the only way to be happy. No, you need to be happy where you are right now.
Otherwise you find your whole life was just "the next goal" and not savoring what you have accomplished already.