Even your biggest hater is accidentally handing you free notes. Take the useful parts and toss the attitude.

Hostility and information sometimes arrive in the same envelope. Someone determined to find your weak spot occasionally finds a real one, and the fact that they enjoyed saying it does not make it inaccurate. Separating content from delivery is a skill rather than a duty, and plenty of it is only cruelty and belongs in the bin. The useful part, where there is one, is free.

Read it once, keep anything you would accept from a friend, and drop the rest without replying. Write the useful line down in your own words. Then stop rereading the original.