There are many exciting aspects to leadership: making decisions, growing your staff, setting the vision, etc. Communicating the same message again and again may not be one of them, but it is no less important. Studies show that employees need to hear a message 7 times on average before they really believe the senior management means it and that it is important. Many an organisation has launched a bold new strategy with great fanfare only to find that little really changes in execution. Constantly communicating the key parts of the message in different situations is one of the ways of driving change and ensuring alignment with the goal/s.
Remember that as a leader, one of your roles is that of CRO (Chief Reminding Officer!).
Oh, and keep it simple and memorable. As the adage says: ‘communicate to express, not impress’.