Michael E. Gaitley is a Catholic priest and a member of the Marian Fathers of the Immaculate Conception. He is best known for his writing on Marian spirituality and Divine Mercy. Father Gaitley has authored several popular spiritual books, including "33 Days to Morning Glory," which is a do-it-yourself retreat in preparation for Marian consecration, and "Consoling the Heart of Jesus," a guide to the Divine Mercy devotion. His works emphasize accessible, practical spirituality for laypeople and have contributed to the spread of these devotions in contemporary Catholic practice.