If everything is urgent, nothing is. Most teams spend their week in the bottom-left quadrant — that's the failure mode worth naming.
Important, not urgent. This is the quadrant a healthy team spends most of its time in. Strategy, deep work, prevention.
Important and urgent. Do it now. If you live here, your "schedule" quadrant has been neglected.
Neither important nor urgent. Most of email, most of Slack, every "quick chat". Cut without guilt.
Urgent but not important. Other people's emergencies. Delegate or batch. Don't drop your important work.