The Pillars of Wellness

To jump-start your self-makeover, Kathy says a 21-day cleanse can improve the way you look and feel. "We just take a few things that are irritating to our bodies and we eliminate them for any time up [to] 21 days," she says. "And if that's too hard for you, literally take three days or a week or two weeks." Kathy stresses that it's not about perfection. "Go as far into it as you can," she says.

To follow the 21-day cleanse, Kathy says to eliminate the following from your diet:

• Caffeine
• Sugar
• Alcohol
• Gluten
• Animal products

So what's left to eat? "Everything that is so healthy," Kathy says. "I say if you can give up a few things for the period of the cleanse, your body will learn to regenerate and produce the brain chemicals it needs, lose the taste addictions it has."

Foods Kathy says are great to eat on the cleanse include beans, grains, nuts, avocado, soy, fruits without a high gylcemic index (nothing too sweet) and vegetables. Kathy isn't on the cleanse at all times—just once or twice a year. See what Kathy eats on a typical day.

Oprah commits to trying the 21-day cleanse for herself. See what happens and how she feels by reading her blogs about her journey. Plus, find the recipes and menu plans of what she'll eat!