Scared as he'll. Need motivation

I have an exam day after tomorrow. PHYSICAL EXAM 😭. And my physical is shit. I am a homebody, and my life is pretty sedentary. So basically, I have equal chances to qualifying and failing. And I soooo wannaaaa qualify 😭😭, honestly at this point, I need to qualify.

I tend to be chill at worst of circumstances, but thissss, is making me nervouus. I neeeeeeeed motivation.

What do you guys do to believe in yourself and calm down? Help me out 🥺🥺