I think most people don't realize how subtle both depression and anxiety can be (probably other disorders, but these are the ones I have direct experience with and talk to others about).
Introversion/extroversion as a spectrum is a real thing. But it's dangerous to use them as reasons for behaviors that are also strongly correlated with other conditions. You're potentially masking the real problems and letting them fester.
I've been in shitty work environments. Being by myself in the evenings and weekends gave me the energy to go back into it and start again. Using the "I'm an introvert" reasoning would have been valid: it was an open plan, I was right on top of other people, little-to-no privacy. But that wasn't the cause, it was the stress of the place (contractor, no benefits, could be fired at any time), that was dragging me down each day. It took me almost a year to realize that, because I did use the introvert reasoning. Addressing it, by leaving, got me to another physically equivalent environment, where I wasn't stressed by the environment (found other stressors, but by then I had mostly learned to recognize anxiety/depression and my reaction to them as a separate thing).
Introversion/extroversion as a spectrum is a real thing. But it's dangerous to use them as reasons for behaviors that are also strongly correlated with other conditions. You're potentially masking the real problems and letting them fester.
I've been in shitty work environments. Being by myself in the evenings and weekends gave me the energy to go back into it and start again. Using the "I'm an introvert" reasoning would have been valid: it was an open plan, I was right on top of other people, little-to-no privacy. But that wasn't the cause, it was the stress of the place (contractor, no benefits, could be fired at any time), that was dragging me down each day. It took me almost a year to realize that, because I did use the introvert reasoning. Addressing it, by leaving, got me to another physically equivalent environment, where I wasn't stressed by the environment (found other stressors, but by then I had mostly learned to recognize anxiety/depression and my reaction to them as a separate thing).