Recently on ABC's World News Tonight there was a clip on mediation and its benefits. I've embedded the clip here.
This clip immediately made me think of Dr. Donald S. Whitney who has done a tremendous amount of work on meditation and the Christian life. As you see the benefits of the clip from ABC, think about how much more beneficial mediation would be if you align it with God's Word.
You can read more about meditation from Dr. Whitney's website, BiblicalSpirituality.org.