This is an excerpt from David Hamilton, Ph.D.'s audiobook, How Your Mind Can Heal Your Body. You’ll learn why people with optimistic outlooks are healthier, have better relationships, and are overall happier in their lives. Learn how to use affirmations to transform your life by joining our FREE 5-Day Change Your Life with Affirmations Challenge from October 4-8. Visit hayhouse.com/affirm to join now!