The Psychology of Spiritual Development. By Benedict J. Groeschel, this is a fascinating, insightful work. The cover states it is "For Those Who Seek", and it is an excellent place to start that journey.
The first part of the book deals with the psychology of spirituality: the call of God and how Christian is one's spirituality? It then moves into understanding development: human, religious, and spiritual. Finally, there is a chapter on psychology and spirituality together.
Part two deals with a psychological understanding of the three ways of the spiritual life: purgation, illuminative, and unitive. Finally, there's a chapter on how to take the the next good step, no matter where you are in your spiritual life. An appendix is included about the history of the doctrine of the three ways.
I read this as part of my morning devotions: in chunks. I look forward to reading it again in regular flow with a highlighter in hand, and to look up some of the authors in Father Groeschel's extensive notes, especially on prayer. Illuminating work and hard work to get through. Not a light read. But if you want to understand yourself both psychologically and spiritually, this is the place to start.