Constraint-Aligned Focus Filter
Stop work that does not strengthen the constraint blocking your goal.
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 98%
Begin with one measurable goal and identify the constraint preventing its achievement. Then inventory every initiative consuming management attention, team capacity, or budget. For each initiative, quantify its direct contribution to overcoming the constraint and reaching the goal. Keep the few initiatives with substantial impact, preserve mandatory safety or compliance work, and stop or freeze the rest. This releases scarce capacity and prevents low-value tasks from delaying decisive work. The mechanism follows the theory of constraints: strengthening the weakest link improves the entire system, while optimizing unrelated links produces activity without meaningful progress. The filter should be revisited whenever the goal or governing constraint changes.
Origin
Alan Barnard demonstrated the method with a coal mine that was behind its annual production target. Its leaders listed roughly 100 initiatives, found only five that directly increased production and five that were mandatory, and stopped the remaining 90. Extracted from The Jasmine Star Show.
Core principles
- 01Every system has one weakest link.
- 02Scarce attention should serve the primary goal.
- 03Busyness is not evidence of useful progress.
- 04Some mandatory work must continue even when it does not advance the goal.
- 05Stopping low-impact initiatives releases capacity for decisive work.
How to run it
- 1
Set the governing goal
State one measurable outcome that the team must achieve. Make it specific enough that initiatives can be tested against it.
Pro tip Use a concrete unit such as tons produced, profit generated, or customers retained.
Watch out Multiple competing goals make the filter ambiguous.
- 2
Locate the constraint
Find the weakest link currently limiting progress toward the goal. Distinguish demand, capacity, supply, cash, and attention constraints.
Pro tip Trace the end-to-end process instead of assuming the most visible problem is the bottleneck.
Watch out Improving a non-constraint may increase activity without improving the outcome.
- 3
Inventory competing work
List every initiative consuming budget, management attention, or team capacity. Include recurring projects and apparently successful side ventures.
Pro tip Keep listing until the hidden workload becomes visible.
Watch out Do not omit pet projects or politically protected initiatives.
- 4
Measure direct contribution
Ask how much each initiative contributes to the governing goal or strengthens the constraint. Use the goal's unit whenever possible.
Pro tip Require a number or explicit causal link rather than a vague claim of importance.
Watch out Indirect benefits can be exaggerated to protect existing work.
- 5
Stop and concentrate
Retain high-impact and mandatory work, then stop or freeze the rest. Redirect released capacity toward strengthening the constraint.
Pro tip Explain stopped work as a focus decision rather than a judgment that it has no value.
Watch out Keeping low-impact work for optionality can recreate overload.
In the wild
A mine was producing 750,000 tons per month and risked missing a 12-million-ton annual target. Leaders listed about 100 active initiatives and measured how many additional tons each would produce. Only five directly increased production, while five more were required for safety or compliance. They stopped the other 90 and focused on bottlenecks in the production chain.
→ The team released attention, aligned around the production gap, and created capacity to pursue the initiatives capable of catching up.
A small software company wants to reduce churn but has 30 projects in progress. It scores each project by expected retained customers, preserves mandatory security work, freezes cosmetic redesigns, and directs engineering capacity toward onboarding failures at the main churn point.
→ Critical retention work moves faster because it no longer waits behind unrelated projects.
Common mistakes
Treating all useful work as equally important
An initiative can produce value while still being the wrong use of scarce capacity under the current constraint.
Optimizing outside the bottleneck
Making a non-constraint more efficient does not necessarily increase the system's output.
Ignoring mandatory work
Safety, regulatory, and compliance obligations may need to continue even when they do not directly advance the goal.
Is it for you?
Best for
It is best for overloaded entrepreneurs and teams facing a clear performance gap or critical objective.
Not ideal for
It is not ideal when the organization has not defined a measurable goal or cannot pause discretionary work.
From the transcript
“there's always only one weakest link”
“How many more tons will that initiative give you?”
“90 of them didn't contribute and we agreed to stop those.”
From the episode
Make Better Decisions Faster