Have you been there?
I've never been stuck in bed for months on end. But I do have bouts of depression from time to time. A couple of weeks ago I had two days stuck on my sofa with nothing but negative thoughts running through my mind and no inclination to get out of it.
That's my problem, I can be happy go lucky from one min and then depressed the next. It's very much out of the blue for me. Depression comes and then I find a reason to be derpressed about it.
It's something I've been like for as long as I can remember and something I will deal with for the rest of my days. I am on a low dose of medication, something I never wanted, and have had CBT. The medication takes the edge off things and while not a magic cure, helps me to think clearer whent he time comes. CBT was one of the best things I ever did. As there is nothing I got depressed about, it was useful to explain to another person how my mind was working and for them to explain to me ways of countering that.
The worst thing about my MH issues is the effect it has on my relationships. Only in the last 3 years or so have I sought help with it all, but before that I would get depressed and, defending my own mind, I would destroy everything around me. It's like I couldn't take the abuse I gave myself, so I projected it onto other people. Heaven knows why I did it and I only have myself to blame, but for me, it was impossible to know I was having an episode until it was far far to late.
But the trick is to except your own limitations. You are not perfect, you are not defined by your thoughts and never, ever give up.