Fear is a two-edged sword. On the one hand, it is protective; a gut instinct is helpful in situations where the facts are not clear. We have an evolutionary trait (called an intentional stance) that we carry in our genes that makes assumptions that have proven to save our hides. Fear is a product of that, a consequence of both our genetic makeup and our desire to survive.
However, in the western world this intentional stance does not always serve us well. Often our fear does not help, but hinders us. The issue is for us to determine why we are afraid. At the end of the day, our actions need to be based upon well-informed decisions, but skepticism concerning our actions is a well-tested intentional stance.
Fear serves us well until we becomes slaves to it.
Perhaps our fear comes down to what it is we actually want: to be correct or to be courageous. Alas, the sword cuts two ways again.