Jim Murphy, in his book "Inner Excellence", writes in the Preface that "Self-centeredness is the root cause of all fear." Being cowardly is not of God who desires that we be of good courage. If we are overly fearful, chances are we are focused on ourselves and not God and the good he wants us to experience.
* The book is the one that A.J. Brown was reading on the sidelines during the playoff game with the Packers. The book went from being ranked 500,000 and then some to Number 1 on Amazon. In a week.