Hello Detective S, hen anybody is struggling with their own type of depression, they can't see the future because all their negative thoughts dominant everything.
Let's place you in a room where all the blinds are closed, so the room is dark, representing any mental health issue, then if you open all the blinds, the room becomes bright, this doesn't mean that any type of depression will suddenly go because it won't, as anything unexpectedly may happen which you might not be prepared for, so you need to take it slowly and try to work on something small to improve your condition.
Hope can be impossible at times because you may not be able to see past that, just try and do something you weren't able to do yesterday and let your feelings develop slowly, remember opening all the blinds won't achieve anything.
Wish you the best.
Geoff.