I’m freaking out

I start tomorrow. The dread and anxiety are so high that it’s physically weighing me down. I feel I’m not good enough. The people training me will see me as stupid and inefficient. I make mistakes more than the average person. I’m so nervous, I feel like I’m having a heart attack. I feel sick. On top of that, I wasn’t able to create a bank account before my first day and I’m freaking out that they’ll be mad it’s not ready for them.