How do you pinpoint the exact moment a new user actually gets value?

We used to celebrate high onboarding completion rates assuming those users were fully setup and happy. But after analyzing churn we realized finishing a walkthrough doesn't mean the user solved their problem.

Shifted our focus to tracking "first real accomplishment" instead of setup steps. If a user creates their first live invoice or exports a report that's when they actually convert into a long-term user.

What specific trigger event do you use in your app to confirm someone actually found real value?