When author Kathy Freston became a vegan, it was part of her choice to become a more whole and healthy person. Now, in her book Quantum Wellness: A Practical and Spiritual Guide to Health and Happiness, Kathy offers principles to help others become conscious eaters and move toward a healthier lifestyle. Kathy talks with Oprah about how to become a conscious eater and how the idea can change the way you think about food.