Hi 123bex, a warm welcome to you.
I agree that anxiety is a debilitating nuisance. Due to abuse among other things, I too ended up with PTSD and attached depression + anxiety though I have now moved on.
There are effective coping strategies, as long as they're practiced consistently (preferably during calmer moments). Mindfulness was a life saver for me (Smiling Mind and Buddhify are useful apps to download). Relaxed Body scan and relaxed breathing also help.
Have you checked online treatment for PTSD ? If not, having a look at MindSpot and MoodGym would be a good idea.
Kindest thoughts.
