When all kinds of trials and temptations crowd into your lives, my brothers, don't resent them as intruders, but welcome them as friends. Realize that they come to test your faith and to produce in you the quality of endurance. But let the process go on until that endurance is fully developed, and you will find you have become men of mature character, men of integrity with no weak spots.
Faith is love taking the form of aspiration. 
If you think you can win, you can. Faith is necessary to victory. 
If I speak in the tongues of men and of angels, but have not love, I am only a resounding gong or a clanging cymbal. If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but have not love, I am nothing. If I give all I possess to the poor and surrender my body to the flames, but have not love, I gain nothing.