Having a weighted blanket to curl up with. Fidget toys. Before I had them I would shred Kleenex in my pocket. Breathing exercises. Pushing yourself to do things that make you anxious for practice. Changing physical sensations, for example having a hot shower or putting an ice pack on yourself. Having a nap. Talking it out.

Keep trying things until you find out what works. I have bad anxiety, but can mostly manage it now.