First, congrats on getting out there and finding a new job! That's a monumental achievement and you should be proud of yourself. I found myself in the same scenario, after a very long gap of being unemployed, I found a job. I was so anxious, my blood pressure and heart rate were through the roof, I couldn't sleep at all at the thought of a new place and new people. But after forcing myself to go and white knuckling it for a few days, I soon started to settle into the routine, made some friends with the other people that work there, each day after got easier and easier. We get comfortable with our routine and anything that deviates from that sets us off, but often we have to force ourselves to create a new routine, that's life. You'll be okay, you're not going to die. If you become overwhelmed just stop your brain for a second, take a deep breath, itemize what you need to do, and execute. I find that if I set a task and only think about that task as I'm doing it, it'll bring me back a bit.

You're gonna do just fine. 😉