Dear stranger,
You might get told often that it'll pass. You might feel like it won't. And that's okay. The sky can go quick from thunder to clear blue. But most often it's usually degrees of cloud and then when you least expect it the sun breaks through. Finally.
If it's sticking to grey you can feel that heaviness, like it's never going to lift. No amount of willing the cloud to break would clear them. Sometimes it just takes a bit more time.
You may not have much to give but see if you can just give yourself patience and soften your harsh edges towards yourself just a bit. Be present with the sadness, don't try to fix it, instead send yourself some care.
Sometimes that can help the clouds break. Or maybe it is just the passage of time, to ride out the darker skies and let the sun break through. I hope this happens soon for you.
You can make it. I have faith in you.