I feel for you OP. I had such a happy childhood (not exactly healthy, but happy). Then when I hit 30 life imploded. And it’s been peaks and valleys ever since, with more peaks than valleys.
Its so hard to relinquish the life you thought you were going to have. I had to grieve for that (as well as actual grief). I had to let it go. At my worst… I wake up in the morning and put one foot in front of the other until I can crawl back into bed at night.
Things that help me…
the knowledge that nothing lasts. The good moments, the bad, all are fleeting. The bad moments will go and come as will the good. I find that thought oddly comforting.
Sertraline. It’s not for everyone. And I hope to be able to a live life without it someday. But it helps me.
refocusing my life. To me that meant going back to a childhood hobby. It has given me ‘me time’, a focus, a renewed sense of purpose etc
exercise. I don’t care about how I look (I’ve let myself go - prob the depression). I exercise for my mind. I can’t always bring myself to do it, but the days I can, I feel so much better.
diet. As above! I find if I eat crap too much, my mood plummets. I take vits, drink water, eat well (ish) for my mood. Oddly I find honey v beneficial.
listen to music and make myself dance. If I dance around the kitchen for ten minutes, I feel a mood lift.
basically I think I suffered ptsd, which brought on depression. The trauma is gone, and the pieces of my life are so much better (myself and oh are in work again, not in horrible bedsit with mould all over etc). But the chemicals in my brain haven’t aligned. It’s a bit of a struggle…. But I can say that these days I have more good days (days I don’t jst want to stay under the covers) than bad.