For St. Faustina, prayer was the very air that she breathed. It might have been a short, exclamatory prayer she repeated while at work like, King of Mercy, guide my soul or a litany of thanksgiving that she composed while in chapel before the Blessed Sacrament. Nearly 150 prayers drawn from her Diary are arranged in this small book under subjects ranging from Love of God to Night Prayer. Pray every day with the nun whom Pope John Paul II called the Great Apostle of Divine Mercy in our time.