Vanity metrics vs. retention: When does the psychological shift happen?

In the early days, every signup spike feels like validation. But the day your first paying customer cancels, your entire mindset shifts overnight. That single churn notification hurts more than a dozen missed signups combined.

It forces you to stop obsessing over top-of funnel acquisition and start looking at the uncomfortable truth product market fit.

To founders who have crossed the early stage hump: Does that sting of churn ever go away, or do you just learn to react faster to cancellation feedback?