When you think about a problem over and over in your mind, that's called worry. When you think about God's Word over and over in your mind, that's called meditation. If you know how to worry, you already know how to meditate! You just need to switch your attention from problems to Bible verses. The more you meditate on God's Word, the less you have to worry about.
~ The Purpose Driven Life
For a girl who spends large quantities of time worrying (and mostly about things I have no control over), it's reassuring to know that I am already almost a pro at meditating once I do a little switch. Whether Bible verses work for me or not I still have to see.