Turn to any page of St. Faustina's Diary, and you'll find spiritual gems like this one:Suddenly, I found myself in a strange cottage where an elderly man was dying amidst great torments. … When I began to pray …  The soul became calm and, filled with trust, rested in the Lord. At the same moment, I found myself again in my own room. How this happens... I do not know. (Diary of Saint Maria Faustina Kowalska, 1797)

Jesus said: Do not be absorbed in your misery — you are still too weak to speak of it — but, rather, gaze on My Heart filled with goodness, and be imbued with My sentiments. … when you feel your strength failing, if you come to the fountain of mercy to fortify your soul, you will not grow weary on your journey (Diary, 1486).

Saint Faustina prayed the Rosary every day. One time, she wrote:… [One time] I saw many demons. One of these tried to vex me; taking the form of a cat, he kept throwing himself onto my bed and on my feet, and he was quite heavy, as if [weighing] a ton. I kept praying the rosary all the while, and toward dawn these beings vanished, and I was able to get some sleep. (412)