The Stress of being in University

I have an essay due in two days. 2 days but only 1000 words. Not a catastophically hard topic (but not simple either). I shouldn't be that worried, right? This is nothing. Wrong.

I am a scientist, not a writer. But I never had trouble with it. In high school, I aced every writing assignment. But coming to university, I feel as if I forgot how to write essays...I literally have NO clue. I don't know what happened. Maybe its the idea that I'm not a humanities student so there's no way I would know to write as well as they would.

Its what happens to everyone. You can't do something because something is holding you back, saying you can't.

I just need to pull myself together and concentrate.