> For my situation I suspect a strong component is personality-related
I think that's true for me, too. While the work organisation and environment is simply bad, I believe that the large part of harm is self-inducted in my case. Changing workplace would definitely help, but I definitely need to work on the underlying personal issues. I think about some kind of therapy to worry less...
I kind of trained myself to worry less. But the work-related stress is stronger, so in the end I care less for some important personal things, and I'm still frustrated with work.
> How have you found things since going back after the 3 weeks?
I felt much better... for around a week. When I went back after 3 weeks, I had a clean slate. Some topics were taken over and completed by colleagues, while others were not taken over and there was nothing to save.
But after that? It returned to "normal" state of being tired and stressed. That's not only my issue – it's a small company, and we all are overworked. Physically, we are unable to meet production deadlines, answer all emails, prepare all projects. That's just how it works. So after two weeks, I was sinking in emails, had to deal with calls from angry clients, etc.