Smart leaders build in unscheduled time to their schedules. They know that things will come up that require them to react, and they know that if they overbook themselves they will have to scramble to cover all of their responsibilities.
(They probably learned this by dropping a few too many juggling balls when an extra one came flying in…)
Do you build unscheduled time? Right into your planner/online calendar? Do you protect it, or do you plan over it too often?
Leaving time in your schedule just to react to whatever urgently shows up is hard, but it can make you more successful at dealing with what life throws at you without dropping everything else.