The only way to get to grips with being new at something is to take it easy. I know it’s easier said than done, trust me, I know but it is the best way, take it easy and take it a step at a time. As you get a feel for the new role, get used to lots of new things, those anxieties will go as your confidence grows.
Remember what it was like learning to drive a car? You had to think of everything, every little thing; having to look at the gear stick to get into the right gear, not being able to multitask (I mean, come on, hill starts?!?), forgetting to look in the mirrors or to indicate. And now? Now you’re able to simply concentrate on the road, aware of others and figure out where you’re going. All those details you used to worry about are now second nature and you don’t even have to think about it, you do it all subconsciously.
The same will happen in your new role; all these things you are learning will become second nature. Be gentle with yourself and take it a moment at a time, day at a time and before you know it, you will not be a newbie 🙂