I have a tendency to skim over information that seem like territory I've covered before. Just because I've covered it doesn't mean others have, however. I have to keep getting thunked on the side of my head with painful reminders that just because I know something doesn't mean others do. This is particularly true with presiding over and participating in meetings. If I want to stop wasting time in meetings that don't go anywhere, just avoiding them won't be enough. I have to help others--especially colleagues--learn to be more effective.