Very interesting find pknight: "4 studies show that emphasizing to-date information increases goal adherence when commitment is uncertain—that is, when participants study for a relatively unim- portant exam, consume luxuries, fulfill a desire, and make first-time contributions to a charity. Con- versely, emphasizing to-go information increases goal adherence when commitment is certain—that is, when participants study for an important exam, consume necessities, fulfill a need, and make repeated contributions to a charity."