Other screaming voices: learning which meetings you can skip (and how frequently), learning which emails you can ignore, learning what can be dropped without too much consequence, learning which 'emergency' requests can be deferred (as they will probably be overcome by events anyway), effectively delegating instead of micromanaging.
Basically, learn to stop sweating the small stuff.
Don't forget about its evil twin, three different people with equivalent rank coming to you with three different things and having all of them say this the highest priority issue you should be working on.
Other screaming voices: learning which meetings you can skip (and how frequently), learning which emails you can ignore, learning what can be dropped without too much consequence, learning which 'emergency' requests can be deferred (as they will probably be overcome by events anyway), effectively delegating instead of micromanaging.
Basically, learn to stop sweating the small stuff.