How to deal with intense paranoia?

I've been awake since 3:00 in the morning, I'm afraid to close my eyes and fall asleep, I really need some water but I'm afraid to leave the room, my food is outside the room as well and I'm afraid to go get it. I'm dealing with intense paranoia and I'm not even sure what I'm paranoid of. I don't really know what to do at this moment or how to calm down and stop being paranoid so I can at least leave the room. Any suggestions?
How to deal with intense paranoia?
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