Fear is a part of our natural make up. It's only when we focus too much on fearful situations and ruminate on them that we unknowingly feed the fear cycle. The more attention we give to our fears the more fuel we are giving them. Blocking them out or distracting oneself from them wont get rid of them either.  We must allow the fear to flow with all of its terrifying possibilities while staying aware but not placing attention on anything. With time the energy behind the fear will diminish leaving the fearful thoughts neutral with no intense energy behind them.