It can feel never ending and sorry to confirm that it kind of is that way. I've been dealing with it for decades. It doesn't go away.
Maybe others have different experiences (and I hope someone does! )
For me it's not that I have recovered. It's more like I've been able to manage it. Or, trying to. I came to this site last year because I was actively looking to end my life, after all.
But I realized that ending my life didn't necessarily mean in the physical sense. I could end my relationships, my job, where I reside and live a different life.
And if that doesn't work out, well there's always the deep blue sea in which to disappear.
So now I'm working on not feeling so depressed. I routinely take a depression screening test and have a log to monitor my ups and downs. I see a therapist. I'm not taking medications. I'm trying to control the urge.
It's still there, humming in the background. Most days I can tune it out. Some days it's so loud that I see police on the sidewalk and want to grab their weapon, click the safety off, and finish it on the spot.
It doesn't go away. But it can be managed I think.
Sorry if that's not helpful.
This site is full of kind members that accept and support. And I'm sure others have better answers than mine.