These are potential life changers, possibly even life savers! Here is a short list of my favorite spiritual books, culminating in my very, very favorite, Conversations, by St. Therese's spiritual little brother, the Servant of God, Marcel Van.
Baars, Conrad - Feeling and Healing Your Emotions, Born Only Once
Gaitley, Michael - 33 Days to Morning Glory, 33 Days to Merciful Love
Martinez, Luis - When God is Silent
Montanaro, Cynthia - Diary of a Country Mother
Phillipe, Jacques - Searching for and Maintaining Peace: A Small Treatise on Peace of Heart
Van, Marcel - Conversations (with Jesus, Mary, and Therese)