If You Want to Talk to God

then some of these might come in handy.

Here's a remarkably helpful guide to the interior life by Fr. Reginald Garrigou-Lagrange.  Physical copies here.  Shorter version here.

Here's a list of resources for a healthy spiritual life, including a great many of the classical masters.  For a history of Christian Spirituality, see Christian Spirituality in the Catholic Tradition.

Here's some of the traditional authors.  And here's a piece on the difference between superstition and prayer.  And a guide to being charitable while online.  And, for the busy person, Fr. Robert Spitzer's Five Pillars Of The Spiritual Life.