I enjoy deep breathing and meditation. It helped me a ton!

I also enjoy relaxing teas that increase GABA in the brain. Passionflower, lemon balm, valerian root are a few that work well. They can be bought in extract forms by themselves or in an herbal tea blend. I like a tea by yogi called bedtime.

Eleuthero, hops, hawthorne berries (in many herbal teas) are also beneficial for anxiety.