I have a job interview on Monday morning!!

I am panicking and stressing the fuck out, I don't know how to calm down...

Does anyone have any advice?

I really want this job, if everything goes well I'll be a Masseuse! It's something that I'm actually comfortable doing but I don't wanna fuck it up.

I've already run through the Interview at least a few dozen times in my head and I can NEVER get it right!