The Importance of Prayer
Jesus gave me to understand how a soul should be faithful to prayer despite torments, dryness and temptations; because oftentimes the realization of God's great plans depends mainly on such prayer. If we do not persevere in such prayer, we frustrate what the Lord wanted to do through us or within us. Let every soul remember these words: "And being in anguish, He prayed longer." I always prolong such prayer as much as is in my power and in conformity with my duty
from the Diary of St. Faustina Kowalksa(872).