6 saints who shaped modern Psychology

"The glory of God is a human being fully alive ... "

- St Irenaeus of Lyon

Long before the birth of neuro psychology; Catholic mystics, pastors and theologians led spiritual lives with remarkable insight. Saints’ writings on thought patterns, impulse control, emotional regulation, trauma and self-awareness; all predated modern science. The purpose of this discussion is to credit God for His gifts of infused knowledge thru these heroes of the faith and explore their wisdom. All concepts have evolved into the modern psychology and neuro frameworks used today, sadly, minus God. Perhaps this explains the growing pandemic of mental health disease today.

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(*Note--this is part 2 of: 6 soothing saints for sleepless souls. While each article stands alone, several neuro concepts were explored prior. In total, please think of these 12 saints like a restaurant menu. Pick the saint that best appeals to our broken souls and follow their bread crumbs toward nourishing healing and peace.)

1. St. Ignatius of Loyola authored The Spiritual Exercises (3-4 hour audiolink). His goal is to understand impulses and emotions, break negative thinking patterns and make good decisions leading to better habits. Our "inner steering wheel" is known as the prefrontal cortex (PFC). As our impulse control center, it helps us think before we act, temper our emotions, consider options and stay focused on long-term goals. When Sts. Ignatius, Teresa and Francis pause, reflect, pray or choose patience; they leverage their PFC to guide emotion. Spiritually, our PFC is where we choose virtue instead of fear, anger or impulse. When souls practice prayer or self-examination, the PFC grows stronger and becomes more connected. This enables us to exercise prudence, choose kindness, self-control and wisdom. These exercises are helpful for young adults whose PFC is not completely developed or for those with impulse control vices. To summarize, the brain’s decision-making and a souls’s spiritual growth work together. This helps us become calmer, more loving, and more grounded. When he tells souls to “act against” negative habits, he asks us to step back, pray, reframe and calm our emotions via these methods: 

• Keeping a journal to track moods
• Challenging our negative thoughts
• Using imagination to calm anxiety

2. St. Teresa of Ávila authored The Interior Castle (7-8  hour audiolink) where she describes each soul as a castle with many rooms. Each room represents a stage of emotional and spiritual growth. Deep prayer, as she describes it, lowers activity in the part of the brain that causes perseveration, overthinking and worry.  This neuro network is the Default Mode Network (DMN), the brain area that becomes active when our mind is wandering, daydreaming, worrying, replaying memories and other “mental noise,” like self-criticism, and imagining worst-case scenarios. St. Teresa of Ávila’s deep prayer—especially the focused kind she describes, reduces DMN activity. When the DMN quiets, souls feel calmer and more aware of the present moment. Spiritually, St Teresa believed removing this  inner noise makes room for God’s voice, peace and guidance. Leveraging this pathway is her key to deeper spiritual freedom. Empathically, she guides the soul into surrendering to ambiguity and uncertainty without panic, stress or fear. Further focus on humility and honesty helps stabilize other emotional centers in the brain. In our quest to become saints, conquering the DMN is the hallmark of mature compassion via these methods. 

• Using quiet reflection to reduce stress
• Seeing personal growth as a journey instead of something to rush
• Understanding that fear and anxiety are part of the process

3. St. Francis de Sales wrote about anxiety, intrusive thoughts, and forming good habits through small steps. Read by Fr Gregory Pine et al, Introduction to the Devout Life (8-9 hour audiolink) he encourages kindness toward oneself instead of harsh self-criticism via neuroplasticity. This is the brain’s ability to change, grow and form new pathways based on repeated thoughts and actions. Just as bees build a hive little by little, our brains build habits through small, repeated actions. He says we don’t become patient, kind or peaceful all at once. Instead, every small choice—like biting back a harsh word, offering a quick prayer or choosing kindness—strengthens neuro pathways of self-control and virtue. Spiritually, St Francis says these “little virtues” slowly fill the soul with sweetness, just like bees who fill their hive with honey. Our brain changes with every small, good choice we make. Over time, good choices shape us into calmer, more loving persons. Self-compassion lowers amygdala activity and reduces fear and stress via these methods.

• Building habits slowly
• Practicing gentle self-talk
• Noticing intrusive thoughts (distractions) without panicking

4. St. Gregory the Great taught via his homily on Pastoral Rules (1-2 hour audiolink) that describes different personality types and how each needs different support. He recognized emotional wounds long before psychology existed. The neuroscience implications he invokes are the understanding of “wounded souls.” Today, this is terms trauma-informed care. matches what we now know about trauma, which affects the amygdala, hippocampus, and stress systems. St Gregory’s advice is to connect with each person according to their wounds, temperament and emotional patterns. People’s brains respond differently because experiences shape neural pathways. Spiritually, St Gregory teaches that real compassion means meeting people where they are. His approach shows that God works through patience and personal attention. Healing—both emotional and spiritual—happens when someone feels understood, supported and guided with wisdom rather than judgment. His focus on temperament resembles modern personality science.

• Understanding that people react differently because their brains and experiences are wired differently
• Matching support to a person’s emotional style
• Recognizing trauma instead of blaming oneself

5. St. Dymphna's story (21-minute audiolink, start at minute 1 after the covid intro) emphasizes mental health, for which she is the patron. She authored nothing, but her town demonstrates her story through their actions. Upon her murder, the Belgian town of Gheel created her international shrine along with the first known community-based mental-health center. St Dymphna's Irish druid father's depression and incestual tendencies made her run away from him. She lived near the Gheel church. She loved and cared for the mentally ill within the home and not sanitariums. Her example showed the Gheelaans how to love the weak and vulnerable. Her post-mortem miracles brought them to into the faith. Trauma affects the developing nervous system, especially in childhood. Many souls struggle with trauma, depression, anxiety and mental illness. Her story reminds us how the brain responds to fear. Modern neuroscience shows that trauma—especially in children—can overactivate the amygdala (the brain’s alarm system), weaken the prefrontal cortex (calm and clear thinking site) and disrupt the autonomic nervous system (which controls stress levels). Spiritually, St. Dymphna’s legacy shows how God’s healing works through compassion, community and the courage to protect the vulnerable. Safe, stable relationships comfort the autonomic nervous system which lowers stress hormones. How did she demonstrate these means?

• Healing happens best in safe, supportive communities
• Trauma survivors need stability, not triggers or shame
• Kindness and consistency are needed for the brain to recover

6. St. Hildegard of Bingen is known for her Scriva or Visions (20-minute audiolink). Meanwhile, her theories involve the connection between the mind, body, emotions and even music. She believed that creativity and nature help heal the inner self. Hildegard’s use of music and chant matches what we now call neural entrainment, where steady rhythms help the brain settle into calmer patterns. Spiritually, she teaches that caring for the body, expressing creativity and spending time in nature open the soul to God’s healing presence. In simple terms, when the brain is soothed through beauty, rhythm, and peace; the heart becomes more open to God’s voice and to emotional healing. Her idea of “inner greenness” matches modern polyvagal theory, which explains how safety and calm help the nervous system work. She calls us to look beyond the everyday and to value it at the same time. She advises not to give up in hardship and to love life, even when it is hard to bear. Her methods involve the below.

• Using music to calm anxiety
• Expressing emotions through art or writing
• Spending time in nature to reduce stress

Patrons of Pathfinding 

These 12 saints prove how spiritual growth overlaps modern neuroscience and psychology. Their habits prove how peace is achieved by: owning our/others' brokenness and retraining our brains to seek God’s healing. In the end, their message is simple. Holding onto sin is like hoarding, whether we are the cause or the victim. Tightly, we cloister our baggage and its resultant pain. Their advice involves 2 steps: confession for the soul is like filling a dumpster. Second, without our baggage, mental barriers and emotional fences; we are free to reframe our thoughts, spiritual lives and relationships. Let us follow these saints' lead, and grow into the souls we were created to be; calm, courageous and connected in love to God and neighbor. 

Sources: 

6 soothing saints for sleepless souls | Catholic 365

A homily of St Gregory the Great on the Pastoral Office | OptiVox

Introduction to the Devout Life | Ascension Press

St. Dymphna: Saint of mental health | Fr Isaac Longworth CC

St Hildegard von Bingen Scivas | Adversus Spiritum Mundi

St Teresa of Avila - Interior Castle | OptiVox

The Spiritual Exercises | Audio Books