If your anxiety is so severe that you are having advanced chronic physical health problems then you need to be on medication. That can add years to your life. Otherwise, DO NOT take anxiety medication. The side effects can be horrific for your health and you will become dependent on it for daily functioning. See a doctor to be sure.
Changes to diet can help. Try a low carb diet and drop alcohol, tobacco, and caffeine. A low carb diet will focus on mostly meat, dairy, and vegetables. Cardio and weight training will also help. Focus on exercises that increase bone density. Not only does this kind of diet improve your mental health it improves nearly all chronic health problems. In my case it has almost reversed and eliminated arthritis.
Just remember a job is a job. They are disposable. You aren’t a celebrity or senior executive so don’t let it interfere with your health. I would rather be poor than let a job drive me crazy and I saying that as a military guy with 5 Middle East deployments.