How do you ignore / get rid of emotions that aren’t letting you get something time-sensitive done?

I feel quite stressed right now, but need to get something done. Would like advice on how to ignore or get rid of the stress, at least until I get the thing done. I don’t really know exactly where the stress is coming from. I’m assuming it’s just because of the thing I have to do, but I’m not 100% sure. So I can’t just get rid of the thing that is stressing me, like so many things online tell you to do lol.

Online I also see people saying that you should not ignore the emotions and "use" them instead. But everyone who says this does not explain how to. And I don’t see how you can possibly use stress? It just makes it difficult to think.

So yeah, any tips are appreciated!