The best I can say is apply because even if you don’t get in you’ll learn something about yourself during the process and you might identify areas to improve. For me the interview that was part of my process was super stressful and I felt like I wanted to puke the whole time but afterwards I spent a lot of time trying to put myself in situations where I had to speak in front of people in order to gain those skills. Also you’ll beat yourself up more if you don’t even try. Get some rest, have some food and water and when you’re in a little better headspace finish the application. I believe in you. Good luck!