I read this somewhere else so it would be nice someone can quote the origin, but think of it this way - you were dead for billions of years before you were born

I read this somewhere else so it would be nice someone can quote the origin, but think of it this way - you were dead for billions of years before you were born, you weren't anxious then. once you are dead you won't feel the anxiety again, so why bother worrying about it now when there are a whole lot of other things you can do.