About the topic:
Fear is a deeper dimension of worry. Fear becomes only possible when we have negative thoughts. We cannot have anything like happy fear. Anger and pain is related to fear. Fear can even destroy life. It is possible to face fear without fear. A person who we call courageous s not one without fear but one has learnt to face fear without fear. Fear is not good or bad. Fear is life energy which exists in us. Fear is a form of energy inside us.
That is why it cannot be destroyed. 'Fight or flight response'. Whenever you are facing a survival threat, you will see your fear rising and the adrenaline release happening in your body.
That adrenaline release gives you so much energy that you can almost fly. We call it the 'fight or flight' response: either you face the fear and fight, or you run away. Whenever our adrenal gland is working, it shuts down the other systems. Pure fear helps in survival, and it is spontaneous. Fear is the fight between oneself versus the negative idea about the future.
When fear is not directed towards any particular event or object in general, it becomes a contraction and an unknown black hole. It is not the object we fear; it is only the idea about the object which makes us afraid. When we change our idea to a positive one, we can avoid fear.