Recommended Books:
On the Spiritual Life:
St. Francis de Sales, Introduction to the Devout Life
St. Francis de Sales, The Art of Loving God [Sophia Institute Press]
St. Robert Bellarmine, The Art of Dying Well [It may sound morbid, but it's a great book about living a holy life so that we are ready to go straight to the arms of our Heavenly Father when our time comes. -- BJC] [Sophia Institute Press]
St. Therese of Lisieux, Story of a Soul
St. Faustina, Diary: Divine Mercy in My Soul
For Meditation:
Glimpses of the Church Fathers, ed. by Claire Russell [116 short readings from early Saints of the Church] [Scepter Press]
Series titled: Sermon in a Sentence, 5 pocket-sized volumes: St. Therese, St. Francis de Sales, St. Catherine of Siena, St. Teresa of Avila, St. Thomas Aquinas
Adoration: Eucharistic Texts and Prayers throughout Church History, editor: Daniel P. Guernsey [Ignatius Press]