The issue with depression is I think this emotional signaling can be entirely miscalibrated, and sometimes, you do you have to figure out a way to override those signals.
Negavive emotions (and physical pain) may be a warning, but I strongly wish I'd have more control over them. It reminds me of a typical scene from a naval or sci-fi movie, when something happens and there's an alarm siren blaring. The captain comes to bridge and asks some crewman to shut off the alarm sound. Because such a warning is useful until it's heard and understood, and then it's only seriously distracting. Much like negative emotions and physical pain.