Blessed are the pure of heart; for they shall see God. —Matthew 5:8
Episcopal priest and CAC teacher emerita Cynthia Bourgeault writes of the difference between our modern understanding of emotions and the teachings of the Desert Fathers and Mothers:
In the psychological climate of our own times, our emotions are almost always considered to be virtually identical with our personal authenticity, and the more freely they flow, the more we are seen to be honest and “in touch.” A person who gravitates to a mental mode of operation is criticized for being “in his head”; when feeling dominates, we proclaim with approval that such a person is “in his heart.”
In the Wisdom tradition, this would be a serious misuse of the term heart. Far from revealing the heart, Wisdom teaches that the emotions are in fact the primary culprits that obscure and confuse it. The real mark of personal authenticity is not how intensely we can express our feelings but how honestly we can look at where they’re coming from and spot the elements of clinging, manipulation, and personal agendas that make up so much of what we experience as our emotional life today. . . .
In the teachings of the Christian Desert Fathers and Mothers, these intense feelings arising out of personal issues were known as the “passions,” and most of the Desert spiritual training had to do with learning to spot these land mines and get free of them before they did serious psychic damage. In contrast to our contemporary usage, which tends to see passion as a good thing, indicating that one is fully alive and engaged, the Desert tradition saw passion as a diminishment of being. It meant falling into passivity, into a state of being acted upon (which is what the Latin passio actually means), rather than clear and conscious engagement. Instead of enlivening the heart, according to one Desert Father, the real damage inflicted by the passions is that “they divide our heart into two.”. . .
The heart, in the ancient sacred traditions, has a very specific and perhaps surprising meaning. It is not the seat of our personal affective life—or even, ultimately, of our personal identity—but an organ for the perception of divine purpose and beauty. . . .
Finding the way to where our true heart lies is the great journey of spiritual life. . . . 
Bourgeault describes contemplation and letting go as the pathway back to the heart’s wholeness:
The core practice for cleansing the heart, for restoring the heart to its organ of spiritual seeing, becomes supremely, in Christianity, the path of kenosis, of letting go. The seeing will come, and it’s a part we still have to work on in Christianity, but the real heart of emotion is the willingness to let go, to sacrifice . . . your personal drama, the letting go at that level, so that you can begin to see. 
 Cynthia Bourgeault, The Wisdom Way of Knowing: Reclaiming an Ancient Tradition to Awaken the Heart (San Francisco, CA: Jossey-Bass, 2003), 32–34.
 An Introductory Wisdom School with Cynthia Bourgeault: Course Transcript and Companion Guide (Wisdom Way of Knowing: 2017), 124. Now available through the online course Introductory Wisdom School (Albuquerque, NM: Center for Action and Contemplation, 2019).