In my stress and burn-out seminars, one in five clergy scores high on the burnout rating scale. Among clergy who have been in their parish for ten years or more, the number doubles. These clergy still perform their pastoral functions with skill and concern, but they have lost their zest and vitality. They have become dull, hollow, and uninteresting, and they know it. The tragedy is that these are probably some of our most dedicated and committed clergy. They are not really dull and uncreative; they have simply given so much of themselves for so long that they are burned out.
Clergy Self-Care, Roy M. Oswald, page 67