"Calm My Anxious Heart" by Linda Dillow changed my life about 12 years ago. I strongly urge you to get a copy. It's easy to read and full of grace and truth. It'll change the way you think. If you're on Okinawa, come over tonight at 6:30 to begin discussing chapter 1.
A couple quotes to get you thinking:
"In the words of the well-knonw theologian J. I. Packer, 'Contentment is essentially a matter of accepting from God's hand what He sends because we know that He is good and therefore it is good.'" (page 17)
Speaker and author Elisabeth Elliott says, "Every assignment is measured and controlled for my eternal good." (page 17)