For me I think depression & burnout have opposite impacts on sleep, not sure what others have experienced.
Depression, in the literature, in my experience, and what I've seen in my spouse leads to just wanting to sleep and not get out of bed.
Burnout, however, lead me to be completely incapable of sleep. I couldn't fall asleep for hours. I'd wake up 10x/night in some anxiety sweat thinking about some way I could make the abomination of a project 1% less horrible. I'd wake up 2 hours before my alarm, in pitch black pre-dawn light in dread and just feel like I needed to get the day started.. so much to do, and it was all going to fail, but I had to be seen to be trying.
Same here, burnout definitely results in waking up multiple times a night and the first thought going through my head was about some work related BS. Idem waking up anxious before the alarm, cluttered with work BS thoughts.
It always did boil down to having no agency over the outcomes but being made responsible for them, and my warning of the idiocy/likely failure mode of the plan being ignored.
Depression, in the literature, in my experience, and what I've seen in my spouse leads to just wanting to sleep and not get out of bed.
Burnout, however, lead me to be completely incapable of sleep. I couldn't fall asleep for hours. I'd wake up 10x/night in some anxiety sweat thinking about some way I could make the abomination of a project 1% less horrible. I'd wake up 2 hours before my alarm, in pitch black pre-dawn light in dread and just feel like I needed to get the day started.. so much to do, and it was all going to fail, but I had to be seen to be trying.