Criticism is a sieve. Keep the useful bits and let the bitterness run through.

Criticism usually arrives mixed. There is often something accurate inside a comment that was delivered badly, and the delivery makes it tempting to discard the whole thing, which protects your mood and costs you the correction. Separating the two is a skill worth practicing. The tone belongs to them and the information can still be yours.

When something stings, write down the one factual claim underneath it. Decide whether that claim is true regardless of how it was said. Keep whatever survives and let the rest go without a reply.