"Fear seems to have many causes. Fear of loss, fear of failure, fear of being hurt, and so on, but ultimately all fear is the ego's fear of death, of annihilation. To the ego, death is always just around the corner. In this mind-identified state, fear of death affects every aspect of your life. For example, even such a seemingly trivial and "normal" thing as the compulsive need to be right in an argument and make the other person wrong - defending the mental position with which you have identified - is due to the fear of death. If you identify with a mental position, then if you are wrong, your mind-based sense of self is seriously threatened with annihilation. So you as the ego cannot afford to be wrong. To be wrong is to die."