Change Beliefs, Values, Vision, Mission, Strategy or Tactics?

“The toughest thing is to see your convictions fail. That's when you really have to deal with your personality and grow as a person. Those are the cases that are more important than the successes you have."

(Dieter Zetsche, Chairman of Daimler AG, in “Driving Lessons: Dieter Zetsche's Experiences behind the Wheel of Daimler-Chrysler and Beyond.” Knowledge@Wharton. March 19, 2008)