“Christian meditation is different from secular meditation (i.e. yoga, etc). Christians actively think about a specific verse/passage of Scripture and how it applies to their lives. Secular meditation is passive. One may allow anything and everything to come into one’s mind. There is no direction or focus. “Freedom” is encouraged but what comes into one’s mind is often not “freeing” at all! Christians must be purposeful and active in their thought life; therefore, meditation is upon the pure truths of God found in the Word. Meditate upon  [a] verse or passage of Scripture each day for a week.”

-page 237, The Heart of Addiction: A Biblical Perspective by Mark E. Shaw

available at Focus Publishing and at Christian Book Distributors