I read about the prayers of Julian of Norwich today; she lived from 13433 to 1413, she is one of the most popular of the English mystics. Here's a little piece she wrote that moved me. 

  "By the grace of God and the teaching of the Church I conceived a great desire to receive three wounds in my life. They were: the wound of true contrition; the wound of loving compassion; and the wound of longing with my will for God." 

I was struck by the simplicity and the devotion of her heart. She taught that the highest form of pray is to the goodness of God. "It comes down to us to meet our humblest needs. It gives life to our souls and makes them live and grow in grace and virtue. It is near in nature and swift in grace, for it is the same grace which our souls seek and always will. 
God only desires that our soul cling to Him with all of its strength, in particular, that it clings to His goodness. For of all of the things our minds can think about God, it is thinking upon His goodness that pleases Him most and brings the most profit to the soul."