This will be the first list of suggested reading for Lent. If you’re a very busy person, you may only have time for a few sentences a day. That can be VERY nourishing and support a habit of daily reading.
From Thomas Merton: Opening the Bible, Liturgical Press, 1970; 84 pages
What Is Contemplation? Templegate Publishers, 1981, 77 pages
Praying the Psalms, Liturgical Press, 1956, 45 pages
Spiritual Direction and Meditation, Liturgical Press, 1960, 99 pages
Short but challenging:
Hugo Rahner & Karl Rahner: Prayers For Meditation, Herder & Herder, 1962,71 pages
Karl Rahner: Watch and Pray With Me: The Seven Last Words, Seabury Press, 1966, 78 pages
Karl Rahner: Meditations On Freedom And The Spirit, Seabury Press, 1978, 115 pages
Augustine Ichiro Okumura: Awakening To Prayer, ICS Publications, 1994, 88 pages
Romano Guardini: The Rosary of Our Lady, P.J. Kenedy, 1955, 94 pages
Hans Urs von Balthasar: The Threefold Garland, Ignatius Press, 1982, 146 pages
Less challenging but longer:
Kathleen Norris, Meditations On Mary, Viking Studio, 1999, 94 pages
J. Philip Newell, The Book Of Creation, Paulist Press, 1999, 112 pages
Arranged for daily use:
Drinking From The Hidden Fountain: Patristic Breviary, edited by Thomas Spidik, Cistercian Publications, 1994; a few paragraphs for each calendar day