The psychological condition of fear is divorced from any concrete and true immediate danger.
It comes in many forms: unease, worry, anxiety, nervousness, tension, dread, phobia, and so on. This kind of psychological fear is always of something that might happen, not of something that is happening now. You are in the here and now, while your mind is in the future. This creates an anxiety gap. And if you are identified with your mind and have lost touch with the power and simplicity of the Now, that anxiety gap will be your constant companion. You can always cope with the present moment, but you cannot cope with something that is only a mind projection - you cannot cope with the future.
Moreover, as long as you are identified with your mind, the ego runs your life. Because of its phantom nature, and despite elaborate defense mechanisms, the ego is very vulnerable and insecure, and it sees itself as constantly under threat. This, by the way, is the case even if the ego is outwardly very confident. Now remember that an emotion is the body's reaction to your mind. What message is the body receiving continuously from the ego, the false, mind-made self? Danger, I am under threat. And what is the emotion generated by this continuous message? Fear, of course.
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. Wars have been fought over this, and countless relationships have broken down.
Once you have disidentified from your mind, whether you are right or wrong makes no difference to your sense of self at all, so the forcefully compulsive and deeply unconscious need to be right, which is a form of violence, will no longer be there. You can state clearly and firmly how you feel or what you think, but there will be no aggressiveness or defensiveness about it. Your sense of self is then derived from a deeper and truer place within yourself, not from the mind.
Watch out for any kind of defensiveness within yourself. What are you defending? An illusory identity, an image in your mind, a fictitious entity.
By making this pattern conscious, by witnessing it, you disidentify from it. In the light of your consciousness, the unconscious pattern will then quickly dissolve.
This is the end of all arguments and power games, which are so corrosive to relationships. Power over others is weakness disguised as strength. True power is within, and it is available to you now.
The mind always seeks to deny the Now and to escape from it. In other words, the more you are identified with your mind, the more you suffer. Or you may put it like this: The more you are able to honor and accept the Now, the more you are free of pain, of suffering - and free of the egoic mind.
If you no longer want to create pain for yourself and others, if you no longer want to add to the residue of past pain that still lives on in you, then don't create any more time, or at least no more than is necessary to deal with the practical aspects of your life. How to stop creating time?
Realize deeply that the present moment is all you ever have. Make the Now the primary focus of your life.
Whereas before you dwelt in time and paid brief visits to the Now, have your dwelling place in the Now and pay brief visits to past and future when required to deal with the practical aspects of your life situation.
Always say "yes" to the present moment.