I have anxiety bad I get it from my dad. I just breath in and out and put a cold rag on my head. And try to think about something else beside my anxiety I'm having. And also if you have anxiety bad you can get medicine for it from the doctor. But once you have them a lot you will get use to them and learn how to control them. You usually have anxiety for concerns and something bad that happen.
Meditation is a great way to deal with anxiety without drugs but there are prescribed medications that also help but have side effects that may be worse than the anxiety. Another option (if you live in a state it is legal) is marijuana it helps calm the nerves and has no major side effects.