Being stuck in any emotional overreaction state is harmful.

There are a lot of people reciting the academic concept of validating emotions without endorsing them in this thread, but in the real world when you consistently "validate emotions" of someone who is over-reacting, it becomes an implicit endorsement.

In the real world, the people I've known to get stuck in negative emotion states did much worse when they surrounded themselves with people who constantly validated their emotions in the academic speak that's being used in this thread.