Dr. Oz's 28-Day Plan to Renew Your Body, Mind and Soul

You've heard this a hundred times before—and you just heard Oprah say it to me! But I'm going to tell you again because I believe it is vitally important: No matter how busy you are, you must make time for yourself. If you don't, you'll start to suffer from chronic stress. And chronic stress can lead to an imbalance in your cortisol (a "fight or flight" hormone) levels, which can wreak havoc on your mood and energy. Bottom line: Sometimes you need to say no—to your colleagues, your friends, your family—for the sake of your health.