Is there a good side to temptation?

"There is a law written across the universe, that no one shall be crowned unless he has first struggled. No halo of merit rests suspended over those who do not fight.
Ice deserves no credit for being cold, nor fire for being hot; it is only those who have the possibility of choice that can be praised for their acts. It is through temptation and its strain that the depths of character are revealed."
-Archbishop Fulton Sheen

Blessed is he who endures under trials. When he has proved his worth, He will win that crown of life, which God has promised to those who love him.             James 1:12