I have been flying drones since last summer and I still get a bit anxious about flying. If there was no anxiety or excitement it would be boring.
The first way I lessened the anxiety was to fly in big wide open areas where I could make mistakes and not end up flying into a tree or the side of my house. Each time I'd go out to fly I'd have a goal in mind. For instance, it took me about a month to get the courage up to take my drone up to maximum legal height. I kept a record of what my max height was and once I got comfortable with that I would add 10 meters.
I also incrementally pushed the distance out for fear of losing video feed. What helped me a lot there was learning how to bring a drone back via line of sight even if the drone was just a dot in the sky. Being able to confidently do that eased my anxiety quite a bit. There's a simple technique to it and I can find the youtube link if you are interested.
I think "stick time" helps. As you fly more and get into a variety of situations you get more comfortable. Flying a cheap toy drone around the yard is a great way of learning basic control. Fly figure 8s around trees for instance.
Each drone has it's quirks and limitations so I'd make sure I'd get some flight time with each to get comfortable and feel out the limitations.
I will say the
Mavic Air 2 is such a great drone to fly that it has lowered my anxiety. The solid connection with the controller and the precision of how it flies lets me focus more on flying than worrying. Just yesterday I was flying line of sight and got a notification that I had hit the 400m distance limit I had configured. Without even realizing I had gone way past my previous record of 320m. Just to prove to myself I could do it, I flew it back via line of sight. Another time while 300m out I lost sight of it after glancing away briefly. I pulled up the map and saw how I could easily point the drone back toward me and easily bring it back.
Like
@old man mavic said, don't panic. In many situations, you can just let go of the sticks and it will hover while you decide on a course of action.