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 TolleTo be conscious of Being, you need to reclaim consciousness from the mind. This is one of the most essential tasks on your spiritual journey.
Eckhart TolleWhen life takes away the forms that you thought were the foundation of your life, what's left? The life that needs no foundation - that is the foundation. The formless. The essence.
Eckhart Tolle