I have had the privilege of serving as a psychiatrist for forty years. They were years when psychiatrists did both medications and therapy, so I knew my patients more intimately than I knew my friends. During thirty-five of those years, I often took care of missionaries who needed psychiatric help in the Washington, DC, North and South missions. It was interesting to see the variety of personalities in the missionaries I met, and I learned that the Lord needs many kinds of missionaries to teach the many kinds of people that walk the earth.