Do not run away from fear.
Put your eyes in the eyes of fear and then act.
There are two types of fears.
In the real dangers like snakes or fire fear is the good or healthy response.
But most of the time you are affected by psychological fears, the illusory dangers e.g. fear of ghosts, fear of examinations or simply fear of accepting challenge.
You become quite nervous and loose half of your potential.
You must expose yourself repeatedly to such fears before you finally master them.