Completely overwhelmed by yesterday's call to overhaul your entire calendar? Don't be. Your goal shouldn't be perfection, but micro-progress. Break it down into the smallest possible unit of progress. What can you do towards this goal in 2 minutes?
Some ideas for the calendar purge:
Email one meeting owner to request an agenda for a meeting tomorrow
Email one meeting attendee group to ask if you need to meet (or could catch up over email)
Designate someone in your meeting to be a note keeper
Ask to reschedule a meeting that the key decision maker can't make
Studies show that your brain gets a spike of dopamine each time you achieve even a micro-goal. Newtons' law of motion applies here -- objects in motion tend to stay in motion.
So, set the bar low and just get started.