Just as in fasting we can realize that it is not hunger that wants to drive us to eat, but our ego that demands the tasty sensations to confirm its existence, we can realize that it is the same with fear.
If we listen only to our stomach during fasting, we will hear how little hunger it actually has. If we listen only to our heart in the state of ignorance and loneliness, then we hear how little fear it actually really has.
Fear is the strongest desire of our ego. Fear is the only reason that leads us to act. If we are in a state of fearlessness, what else would there be to do. Everything would be good for us. However, since the ego thinks it can manifest itself through action, it must keep us in the constant feeling of fear and thus always on our toes. In the meantime, the ego has already created a perfect world that almost by itself accomplishes to bring and keep all people permanently in a perception of fear. A world in which it is never possible to turn off the ego. Like doctors who make their living from people being sick and not from curing them. Like the appetite that, without real hunger, makes us fill up.