1. Never violate a confidence, either in or out of the pulpit.
2. Never tell a story on your wife without her full support.
3. Never fail to minister to someone because “they don’t deserve it.”
4. Never make a promise you do not keep.
5. Never take the week between Christmas and New Year’s as personal vacation time.
See:
http://www.crosswalk.com/blogs/joe-mckeever/5-things-pastors-should-never-do.html