I keep seeing teams fix the wrong problem — how do you know when something is actually “fixed”?

Over the last while, I’ve noticed a pattern in both my own work and conversations with other founders:

Most teams don’t struggle because they can’t execute.
They struggle because it’s unclear what “fixed” actually means.

I’ve seen situations where:

Multiple issues are flagged (performance, SEO, technical warnings, etc.)

Teams make several reasonable changes

But there’s no clear way to tell which change mattered — or whether the real problem was ever addressed

What often follows is repeated fixing, second-guessing, or debates driven more by confidence than evidence.

I’m curious how others here handle this in practice:

How do you define an acceptable or “done” result before acting?

What signals help you confirm that a problem is genuinely resolved?

Do you rely on a single metric, a small set of indicators, or simply time passing?

Not pitching anything — genuinely trying to learn how experienced founders avoid chasing noise and misdiagnosing problems.