How to calm before a dance recital?

I am SO stressed! I have a dance recital on Sat. and I am in 6 dances, 2 ballets, a modern, then I lead the pre ballet and I have two company dances (My studio has an elite dance company made up of the best dancers, I am one of the senior girls out of nine girls, the dances are a snippet from Little Red Riding Hood, and a Opener!) That, is a ton of responsibility and costume changes. I keep pacing the living room dissecting every dance and doing it in my head!