Look into our savior the lord Jesus Christ.
I used to have the same feelings. They started when I was 11, and I'm 15 now. After I became a vegetarian, all of my anxiety went away, so I would try that for a couple weeks. I would also write poetry when I was having an attack, and that helped a lot. It might help you to have your feelings on a piece of paper, instead of in your brain. I hope I could help! :)