This lean business assessment is a self-reflection tool, not a substitute for a formal lean audit or consulting engagement. Your score and the AI-generated report are based on the answers you give. Use them to start a conversation with your team — not as a clinical diagnosis. Best of Motivation does not guarantee specific business outcomes from any change you make based on the report.

What is a lean business assessment?

A lean business assessment is a structured way to score how much of your operation is leaking value — and where. It comes from the lean methodology developed at Toyota in the 1950s and now used across manufacturing, healthcare, retail, and hospitality. The assessment doesn’t grade your knowledge. It looks at your routines: how shifts hand over, how waste gets logged, how the team reacts when a delivery’s late, how often a problem gets fixed at source instead of bandaged.

The diagnostic on this page uses the 3M framework — Mura, Muri, Muda — to score three different kinds of leak. You get a number out of 45, a tier (Reactive, Improving, or Operationalised), and the name of your weakest M. From there, the AI report gives you a 30-day plan and three scripts written for the sector you operate in.

The 3M framework — Mura, Muri, Muda

Most managers know about waste — Muda — and stop there. The full lean methodology has three Ms, and the most common mistake is fixing the wrong one. If you fix Muda when your real problem is Mura, the waste comes back the following week. The full breakdown of how Mura, Muri, and Muda interact sits in BOM’s deeper article — read it after you’ve taken the diagnostic and seen which one you scored lowest on.

The three tiers — what your score means

Who this lean self assessment is built for

Store managers, department managers, restaurant managers, bar managers, café operators, head of departments, and assistant managers being prepared for their first floor. If you run a physical operation in grocery, convenience, supermarket, fashion, hardware, pharmacy, or hospitality, the diagnostic is calibrated for your sector — the questions and the AI report will reference the language and the metrics you actually use.

It’s not built for: lean consultants looking for new theory, office-based managers without a physical floor, or anyone wanting an app or dashboard. The diagnostic is paper-and-pen by design — the wall checklist that comes with the optional £7 Lean Manager Playbook prints on a single A4 sheet and pins to the back-office wall.

After the quiz

Your free AI report includes your weakest framework, a four-week plan, and three scripts for this week. If you want the deeper version — the printable wall checklist, the 30-day plan with daily prompts, and the full nine-script library — the Lean Manager Playbook is £7 (launch price, normally £15). Instant download, 14-day refund.

For broader leadership context, the BOM Leadership Diagnostic uses the 5R framework to score how you lead the team running these operations — a natural complement to the lean tool above. And if you have one specific question after the report, Ask BOM is the free AI advisor trained on 600+ Best of Motivation articles, with citations.

Frequently asked questions

No. The questions are about your routines and your team — not about lean theory. If you’ve never read a lean book, you’ll still score accurately. The AI report explains what your weakest M means in plain English.

Around 90 seconds. Twelve questions, mostly multiple choice. One open-text question at the end about the operational issue costing you the most sleep.

Yes — it’s generated by Claude (Anthropic) using your specific answers. The report references your sector, your team size, your weakest M, and the open-text answer you gave about your biggest pain. It’s not a templated PDF.

No. You’ll get the AI report by email plus periodic notes from BOM about leadership and lean. One-click unsubscribe in every email. Email is processed via Mailchimp; we don’t share or sell it.

The free quiz + AI report names your weakest M and gives you a starter plan. The £7 playbook is the working version: a printable wall checklist (A4), the full 30-day plan with daily prompts, the nine-script library, and the 3M waste taxonomy translated for retail and hospitality. The quiz is the diagnosis. The playbook is the routine.

Nelson Fernandes — CMI-qualified leader with 20+ years in operational leadership. Six Sigma Green Belt. Lean Enterprise Academy UK member.