This week on The Exchange, as the new looms, we consider our goals and life choices and sometimes ask ourselves if we have sold out on our values. We talk with the author of a new book called "The Ethical Sellout," about the many ways compromise can help us make decisions that accord with our values and the practical needs of our lives. Iowa's first in the nation presidential caucuses are less than a month away, and the candidates continue to campaign across the state. We will hear from the