From error to error one discovers the entire truth.

Understanding rarely arrives whole. It gets assembled by being wrong in increasingly specific ways, each mistake ruling out one more thing and narrowing what is left. That makes an error less a verdict on you than a piece of information about the territory, though only if you stop long enough to read it. People who never get anything wrong are usually people who never venture a guess.

Treat your next mistake as a measurement. Write down what you expected, what actually happened, and the gap between them, then let the next attempt be wrong in a new way rather than the same one.