I think of myself is as a good prioritizer at work with my Franklin Planner and A, B, C, 1, 2, and 3, but I learned two excellent tips from this article on How to Prioritize Work.
1. When you divide your work into “urgent” and “important” consider ignoring the “urgent” emergencies.
It sounds absurd at first, but the rationale is that these often aren’t “your” emergencies, but someone else’s poor planning and execution.
2. When you take on new projects, figure out what exactly you are losing. My tendency is to take on more and more work and forget about what I’m losing.