It would be easy to just say that we have here someone who has been given heroic grace to enable him to have the courage to fight and win. It seems more intense if a Christian is trying to take faith seriously. Then opposition comes from within and without. Some will oppose your ethical beliefs. Others may ridicule our manner of life, and take advantage of someone who is trusting and forgiving.
Circumstances can seem to conspire to cause misfortune and adversity.
Suddenly the plight of Job is understandable as the devil is given permission to trouble and test God's servant. See Blake's Satan putting boils on Job . You have blessed the work of his hands, and his possessions have increased in the land. Even when the external arena is peaceful, the inner person can be in turmoil. Perhaps the princess could represent a loving spouse and the dragon sexual temptation, or she might symbolize who you could become, while the dragon is the evil you do in spite of your desire to do good.