Based on the desert fathers Cassian and Evagrius, presenting maturity in spiritual life as awareness and direction of our thoughts regarding: hunger, lust, possessions, anger, sadness, boredom (acedia), posing (vainglory), and arrogance (pride). Quite amazing - I didn't at first agree that snacking between meals (seems so little) can have an effect on prayer or mindfulness, but she makes a good case. Interior and exterior life inform and influence each other.