This certainly agrees with my experience. I've had a number of cases in the past where I'm feeling low/depressed at work and tend to get more frustrated, e.g. a

This certainly agrees with my experience. I've had a number of cases in the past where I'm feeling low/depressed at work and tend to get more frustrated, e.g. annoyed with some policy or some design decision or some detail about the code that I'm working with. It's a bit counterintuitive that sadness and lowness would do that, but it seems to be a pretty clear pattern. After a number of cases of expressing that frustration and regretting it later, I've set a rule for myself that I should mostly keep my mouth shut if I'm feeling depressed. If I do want to follow up, I should just write down my thoughts and talk through the issue later when I'm feeling better. Fortunately I'm pretty good these days about being aware of when I'm feeling depressed.