it is hard to get rid of anxiety without knowing the right coping method and the reason you're being anxious. have you know what is the source of your anxiety in the first place or does it comes in waves without any trigger warning at all?

if it's the former you may need to fix the source and starts from there. but if your anxiety comes without any triggers it could be due to you have generalized anxiety disorder. you might need to make an appointment with doctor / psychiatrist and seek their help.