Yeah, anxiety sucks, I feel you there. Though it sounds like you're able to deal with it to at least some degree, which is something. I hope you're able to improve on it further. And I also hope that all the extra work is at least going alright ^^

Yeah, new work responsibilities can be intimidating. Like last summer was the first time I presented a dessert for a five course dinner. And like, I had to design the dish itself and make it from scratch, and it had to be a quality dessert too.

The night of the dinner I was a nervous wreck. I'm not sure why either. I had everything prepared, I had made the dessert beforehand and everything tasted great, I even had enough for extra platings in case something went wrong (like if a server dropped a dish).

Even though everything went without a hitch it was still an emotionally draining experience. XD

But yeah, the best advice I can give is this: try your best to work with a calm mind. You're probably more capable of handling real grown-up businessy stuff than you realize.