Well there are things that can help like exercising every day for atleast 30 minutes, meditation daily, yoga, learning and practicing
mindfulness(there are lots of books, Jon Kabat
Zinn is one author) learning deep breathing exercises. Over proper diet. The better we treat our bodies, the better we can feel. CBT is also another way that can help people control their anxiety, other therapy. Always ensure that there is no medical cause for your anxiety and keep your doctor up to date.