As a general statement about anxiety to all Christians, don't under estimate the fact that a perceptive (and intuitive) person's anxiety may be sensing what is going on all around them. Of course they will run to ministers and counselors to "fix their problem" when in fact, it's the messed up world around them that one is reacting to. Meanwhile, the very people who claim to help may be in and of themselves too obtuse to see the dangers around them. To them it's "whistle a happy tune" and the world is rainbows (how true that's been lately lol) and butterflies while in fact, sinister things are happening. This is especially true with so-called general anxiety disorder. The only prayer and advice I can give is to take that very real fear and deal with it by being a light in this world to help others. Be the Lord's right-hand man (or woman) so that His works work through you instead of dwelling on the fear. Also keep yourself physically healthy (which is a large topic in and of itself).
Let me briefly tell my general anxiety when I was a youth. In the late 60's and early 70's I had general anxiety. People blamed it on when I went to a friend's funeral. But now looking back it was far more. Back in the 60's there was great social upheaval; riots and killings on campuses. There were racial tensions. There was the Vietnam war and yes, in 1967 and 1973 Israel was surrounded like today and there was fears of nuclear war. People predicted Jesus would come back soon. Sound familiar? When I found the Lord in the early 70's I was on God's side now and anxiety greatly abated. There were some things I was yet working out, but overall the anxiety was gone. I can see now, looking back, that I was feeling the craziness of the world and indeed, other people's feelings; not mine. Just remember that. It may not be you. Rather than dismissing the anxiety, it's more what are we all going to do with it?