There was a point in my anxiety that every nite i was going to die. I was sure that in my sleep i was going to have a heart attack and not wake up. each morning when i would wake up i'd feel better for being alive but at nite the same feelings of dread came back. the fear of death is powerful. it can keep you locked up in your head or you can use it to make the most of life. Thats what i decided to do. I went back to school, just taking online classes at first, and it kept my mind busy and away from the emptiness. You have to keep moving, eventually you'll get distracted enough that you can accept your health(im assuming you've had many tests done like a lot of us here) and continue on to achieving whatever goals you set for yourself.