A friend of mine offered this adage. We were talking about an overseas trip he had taken with his CEO, who unfortunately was stricken with food poisoning the night before their first meetings. He ended up making 10 presentations in three days on behalf of the ailing CEO.
This situation would be terrifying for most people, but my friend was totally prepared. As I listened to his story, I thought about how few people project beyond the boundaries of their own job and could step in for someone with no notice.