My only experience is my biggest, at work a stable and secure job i was bullied and on a daily basis by a total sadist, pushing more and more work, making things up, inventing lies about me, with no access to equipment i could handle the bulling but not with the added Bodily pain i suffered and am in now, so in effect the just two issues brought me down,
you are handling more than one man can cope with, we are not supermen, there are at least 9 factors which are affecting you at the moment, plate spinning can only be achieved for a short time before one falls off, and halts the show, energy levels will begin to drop and the mountain will look higher. the dark circle appears.
even if we think we can overcome it by tackling each issue as it arises we condition ourselves to wait for the problem just trudging through, the list you have given is going only place downwards, don't jump ship, you need to just begin to understand and let other's understand exactly what walls you are encountering.
years ago i would have said keep going don't give in,you will get there, but i know in the real world that's not a real solution, you need answers to your questions just read them again as if someone else has written them, then you may know which way to go.
LR