" The effort that we put into something does not just change the object. It changes us and the way we evaluate that object. Greater labor leads to greater love. Our overvaluation of the things we make runs so deep that we assume that others share our biased perspective. When we cannot complete something into which we have put great effort, we don’t feel so attached to it. "

― Dan Ariely , The Upside of Irrationality: The Unexpected Benefits of Defying Logic at Work and at Home