Introduction:
I recently wrote about building systems for your worst days here.

That got me thinking that I need a system to measure how my systems and optimizations are performing on my worst (and average days for that matter) days. Thus:
WDEI: Workday Effectiveness Index
What it is:
A quick metric for packed days so you know if your systems are carrying you or if there’s a bottleneck to fix.
Formula:
WDEI = (top‑leverage tasks completed ÷ top‑leverage tasks planned) × (focused minutes ÷ available “maker” minutes)
How to use (2‑minute setup):
Define top‑leverage tasks (3 max for the day).
Estimate maker minutes (non‑meeting, potentially focusable time).
Log focused minutes (actual deep‑work blocks ≥15 min, no context switches).
Compute WDEI at day end.
Interpretation:
≥ 0.60 → Systems working; keep current routines.
0.40–0.59 → Friction; tune meeting hygiene, buffers, or task slicing.
< 0.40 → Bottleneck; fix in the next weekly review (reprioritize, delegate, or automate).
Example (fast math):
Planned top‑leverage tasks: 3; completed: 2 → 2/3 = 0.67
Maker minutes: 90; focused minutes: 55 → 55/90 = 0.61
WDEI = 0.67 × 0.61 = 0.41 → bottleneck detected
Common fixes (pick one):
Reduce same‑day commitment: drop to 1–2 top‑leverage tasks on heavy days.
Pre‑build micro‑blocks: 3×20 min protected focus slots.
Convert meetings → async briefs; bundle decisions.
Pre‑stage work: checklist, files open, first keystroke defined.
Tiny tracker (copy/paste):
Date: __
TL planned: __ | TL done: __ | TL ratio: __
Maker min: __ | Focused min: __ | Focus ratio: __
WDEI = __ × __ = __
One friction to remove tomorrow: __
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* AI tools were used as a research assistant for this content, but human moderation and writing are also included. The included images are AI-generated.