Poet and novelist Ben Okri on the power of the mind: "Beware the stories you read or tell; subtly, at night, beneath the waters of consciousness, they are altering your world."

Dutch watchmaker and writer Corrie ten Boom on worry: "Worry does not empty tomorrow of its sorrow, it empties today of its strength."

Think about someone who has the results you want or a lifestyle you admire. It's easy to want the results. What are the costs and tradeoffs of their lifestyle that you may be overlooking?