Tatsy, there are many many ways to work with your body to keep anxiety down.
Exercise, healthy nutrition, therapy, meditation, joining in activities like sports or taking a class in watercolors or learning to kayak. Reading recovery books or listening to recovery podcasts like, "This Naked Mind," self help books, volunteering. Grounding activities like walking barefoot, doing "tapping," visualization, hypnosis, massage, other spiritual practices like yoga. That breathing exercise I linked is just one tool.
We each come with our own past to overcome and I had to treat *my* issues, which are likely a little bit different than yours.
Seek and you will find.