Criticism is raw material. You can build something with it or trip over it.

Feedback arrives as a feeling first, and the feeling is almost never accurate about the content. Underneath the sting there is usually one usable fact, sometimes small, occasionally the most valuable thing anyone told you that month. Whether it becomes material or an obstacle depends on how long you spend defending yourself before you get to the fact.

Give yourself a day to be annoyed, then go back and pull out the single specific thing you could change. Ignore the tone, keep the fact, and act on it once before deciding whether the person was right.