I have a video below of a presentation that Rubin gave in case you did not catch my last post. In short, she describes four kinds of people with their "tendencies" when it comes to external or internal motivation. Although some might argue that these are too simplistic, I would argue they are "parsimonious" in that they make sense of complex issues--of why good intentioned people find themselves unmotivated or on the other end of the spectrum, motivated in a way that brings out bad outcomes in their lives.
The Tendencies are here given as a way of understanding our tango lives in the area of external and internal motivations. Take the quiz about your own tendencies BEFORE you have reviewed the below video. Be sure and answer the way you are and not the way you'd like to be. Press here for the link to the quiz.