“I have not yet begun to fight.” – John Paul Jones

The story behind this quote as a retort in a battle that seemed all but lost and yet was turned around into a victory is told here:

http://www.eyewitnesstohistory.com/johnpauljones.htm

As Captain Jones is also famous for saying, if you cultivate fear, fear wins.  If you would be cultivate faith, you can achieve almost anything you set your heart on. Determination and perseverance are everything in overcoming adversity.