yeah, having health problems which affects working ability sucks, disability pension would be really bad for depression but idk if i can sleep enough to work. Only insomniacs get what it means, you are pretty much like drunk without drinking :(.
sleep hygiene doesnt help much, i could try sleep therapy but idk if it helps much, i train enough but dont socialize much. got side effects from natural herbs it was ashwagandha which i tried, melatonin is safest but it loses effectiviness quickly so its not solution.
I've felt some of those emotions. the main antidotes were purpose (depression) and I think like accepting danger (trying to make peace with God) and also developing skills to cope with various challenges (in the theory of flow, flow is between the extreme of anxiety when challenge is too high and skills are too low, and boredom when skills are too high and challenge is too low... so anxiety is like either you have too much challenge and not enough skill for it and you could scale back the challenge, or if the challenge can't be scaled back then about improving skills)
naturally I think both depression / anxiety may have existential causes, or in other words I think religion is a kind of antidote to some of it. The Biblical literature has some that seem kind of "depressive" (Ecclesiastes? Job?); with anxiety, the apostles were rebuked on occasions ("ye of little faith") and encouraged ("do not worry"), and yet also Jesus had a kind of anxiety to the point of sweating blood in the Garden of Gethsemeni (spell?)
maybe i have inherited the GAD part... i could try working part time but idk if that'd be enough to cover the cost of living or not. Not all illnesses are curable.
how about listening to soothing sounds or music and visualizing (to try to fall asleep), like if someone's a recreational climber, they could visualize practicing climbing and listening to the sounds. the key is distracting the attention and focus to something "pleasant" and away from the depression and anxiety (just to get to sleep, maybe those things should be thought of some time during the day when awake)
yeah, the only "real" solution is non medical solutions if they dont work then nothing works. I did find https://www.cfsrecovery.co/apply this CFS recovery thing which could help in my case even if i dont exactly have chronic fatigue syndrome, insomnia could still be caused by overactive nervous system in which case this could help but the "course" is bit costly.