I recently went through few death related panic attacks. I ended up going to the doctor who prescribed an anti-stress drug, which made me somehow calmer. The anxiety increases whenever I feel my health is deteriorating, so taking care of your health can be helpful.

But what makes it completely disappear for me is a different thing. I’m religious and I believe in the afterlife. That makes me comfortable with the idea of death, but doesn’t prevent me from having anxiety, as I believe my outcome is tied to how well I’m behaving/avoiding and repenting for my wrong deeds. Basically whenever I’m sufficiently happy with my actions, the anxiety disappears.