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.
Eckhart TolleSometimes surrender means giving up trying to understand and becoming comfortable with not knowing.
Eckhart TolleIf there were nothing but thought in you, you wouldn't even know you are thinking. You would be like a dreamer who doesn't know he is dreaming. When you know you are dreaming, you are awake within the dream.
Eckhart Tolle