I can't sleep! I won't sleep! I'm worried that if I go to sleep now that this worry will become a part of me, that I'll be stuck with this sense of trepidation FOREVER!
My brain says "Look, let's just reason our way through this. Let's pull out the playbook of things that help; some reading, a movie, maybe a video game, go outside get some fresh air, imagine you're on a beach..." Meanwhile some other part of my brain, the "heart" part, is freaking the FUCK OUT!