Have you been mixed before? My best advice is to stay on your usual routine as much as possible. If anything you're doing feels frustrating, stop doing it and do something else. It may be hard, I get impulisve to the point that I can't stop doing something that's frustrating me even though it's pushing me over the edge. Try to stick to things that are generally calming and avoid anything that you even consider a minor trigger if you can. Just... basically take it easy for the day.

I'm sorry you're giong through this. Just know you can get through it. I don't hear voices the way you do, but, it's pretty common for me, so I understand how much it sucks.