Dr. Jill Bolte Taylor: Why your left brain runs your life

Taylor maps four personality “characters” onto four brain regions: (1) Left-thinking: analytical, structured, language-based, ego-driven, focused on me, time, goals, and control (her ‘Helen – hell on wheels’); (2) Left-emotional: stores pain, trauma, fear, craving, and defensive reactions (her ‘Abby’); (3) Right-emotional: playful, embodied, sensory, spontaneous, present-moment joy and curiosity; (4) Right-thinking: expansive, peaceful, awe-filled, interconnected, ‘wisdom’ consciousness. Each has a predictable pattern of thoughts, emotions, and behaviors. By naming and noticing them, you gain the ability to say, in real time, “Who’s running the show right now?” and deliberately invite another character in.

Society disproportionately rewards the left-thinking brain (productivity, data, achievement) and lives trapped in the left-emotional brain (rumination, trauma replay, anxiety, addiction). These regions focus on ‘me’ and on linear time—past injuries and future worries—fueling individualism, narcissism, and zero-sum thinking. The right hemisphere, which experiences oneness, connection, awe, and presence, is underused and often mislabeled as ‘unconscious’. Rebalancing toward whole-brain living—honoring all four characters—offers a path out of pervasive dissatisfaction and societal conflict.

Neurally, we do three things: think thoughts, feel emotions, and run physiological loops that match those emotions. When a triggering thought arises (e.g., recalling someone who wronged you), it sparks an emotional and bodily cascade that peaks and resolves in under 90 seconds—if you don’t keep rethinking the story. Staying angry or anxious for hours usually means you are continually replaying the thought, reactivating the circuitry. The practical move: notice the wave, feel it fully, don’t feed it with more narrative, and let it pass. This is a key lever for emotional self-regulation.

Trauma memories and associated fear responses live largely in the left-emotional circuitry (including the amygdala and related limbic structures). Trying to “get rid” of trauma is both unrealistic and neurologically misaligned. Instead, Taylor suggests: (1) Acknowledge trauma as valid information about what was unsafe; (2) Use right-thinking (character 4) to bring compassion, perspective, and meaning; (3) Use right-emotional (character 3) to reconnect with safe, present-moment experiences and play; (4) Use left-thinking (character 1) to channel anger or hurt into constructive action (e.g., advocacy, building safeguards). Trauma is meant to inform and protect, not define your entire identity.

Step one is self-observation: notice when you’re in each character—at work (1), in resentment or fear (2), in play or embodiment (3), or in awe and gratitude (4). Step two is intentional recruitment: ask, “Which character would serve me now?” and act in ways that evoke it—e.g., structured planning for 1, journaling or therapy for 2, movement/music/play for 3, meditation or gratitude for 4. Taylor also discusses lateralized light stimulation via special glasses that preferentially activate one hemisphere, demonstrating how simple sensory inputs can bias you toward focus (left) or relaxation (right). Over time, this becomes a practiced skill, not a one-off trick.