Fear is a cruel master. It can cause you to flee or react without planning. Fear just is a warning device. Do not let it control your actions and reactions. Accept the emotion of fear. Know that it is there for a reason and acknowledge it. Do not let it dictate irrational actions instead of rational actions.
“There is a time to take counsel of your fears, and there is a time to never listen to any fear.” ~ George S. Patton
When you are walking somewhere minding your own business and you suddenly become afraid, that is your mind telling you of trouble. Take note of that and react accordingly by scanning the surround area for danger. Plan for an attack and determine the best way to get out of the dangerous situation. Often times when you do this, no attack will arrive. This is because you took appropriate action.
“Courage is resistance to fear, mastery of fear—not absence of fear.” ~ Mark Twain, Pudd’nhead Wilson, ch. 12 (1894)
One way to manage your fear is to breathe. I often use ten short breaths to calm my inner self. It brings clarity to the situation. The biological effects of fear are an adrenaline surge and the shortness of breath. You stop breathing or hold your breath. This technique of taking ten short breaths will overcome this biological response. Training when you are tired and fatigued will help with the adrenaline surge and its after affects.
“Cowards die many times before their deaths; The valiant never taste of death but once.” ~ William Shakespeare, Julius Caesar, Act II, sc. ii (1599)
You control fear by will. You take charge of your own mental facilities and actions. You just do it.