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Content Warning: This section of the guide includes discussion of substance use.
Chapter 3 explores how sensory experiences serve as powerful, effortless tools for shifting emotional states. The chapter presents neuroscientific evidence demonstrating why sensory pathways offer a uniquely efficient avenue for emotional regulation. The sensory cortex, one of the brain’s evolutionarily oldest regions, processes information from the five senses and communicates with emotional networks through ancient neural pathways, allowing sensory inputs to trigger emotional responses within milliseconds—often before they are registered in conscious awareness. This adaptation evolved to help humans avoid dangers and remember important experiences, with emotion serving as the “glue” that binds sensory information to memory.
Kross contextualizes this mechanism within the “Law of Least Work” (61), a cross-disciplinary principle asserting that organisms naturally gravitate toward paths requiring minimal physical and mental effort. This explains why sensory regulation tools often succeed where more cognitively demanding strategies fail—particularly during periods of stress when cognitive resources are already depleted. Sensory pathways bypass the prefrontal cortex’s executive function requirements, allowing for emotional shifts without taxing the brain’s already limited cognitive resources.
The chapter positions sensory regulation as an underutilized yet highly accessible approach that complements existing frameworks, offering what Kross terms “emotional side doors” that can be opened strategically to shift between emotional states (66). However, he cautions that without intentionality, people may unwittingly choose sensory experiences that mirror negative emotional states through the “emotional congruency effect” (64), or they may develop problematic coping patterns like emotional eating.
Kross’s examination of sensory regulation represents a notable departure from conventional emotion management approaches, which often prioritize cognitive strategies. This cognitive-centric approach reflects Western psychology’s historical tendency to privilege thought over embodied experience, potentially overlooking more accessible regulation pathways. The chapter’s emphasis on effortless regulation also intersects with emerging research on cognitive load and decision fatigue, suggesting that emotion regulation frameworks should account for varying levels of mental resource availability.
Chapter 4 of Shift tackles a common belief in self-help culture that might be holding people back: the idea that one must always face difficult emotions head-on. Kross calls this “the myth of universal approach” (81)—the popular notion that avoiding emotions is bad while confronting them is always good. Through the stories of two individuals—his grandmother who survived the Holocaust and NBA star Dennis Rodman, who famously took breaks to party during championship seasons—Kross shows how sometimes stepping away from emotions can be healthier than constantly confronting them.
Kross breaks down the science in simple terms: Attention works like a spotlight that one can direct toward or away from difficult feelings. Research after 9/11 by psychologist George Bonanno found that the most resilient people weren’t those who always confronted their emotions or always avoided them, but rather those who could do both depending on what the situation called for. This emotional flexibility, Kross explains, is like having different tools for different jobs rather than using the same approach for every emotional challenge. He adds that the body even has a natural “psychological immune system” that processes negative emotions over time (82), but it needs strategic breaks to work effectively.
The chapter highlights striking generational differences in emotional processing strategies. Kross’s grandmother, representative of the “Greatest Generation,” lived in an era that stigmatized therapy and valued emotional stoicism. Despite limited emotional expression and without formal therapeutic intervention, she achieved a fulfilling life after extreme trauma. This stands in stark contrast to contemporary approaches that emphasize talking about and actively confronting trauma, often with the guidance of a professional. Kross notes that today’s culture tends to portray emotional suppression as inherently “toxic,” representing a dramatic shift from previous generations’ more compartmentalized approach to difficult experiences. These generational differences suggest that the understanding of “healthy” emotional regulation continues to evolve and is significantly shaped by cultural context rather than universal psychological truths.
Chapter 5 explores the challenging yet crucial skill of reframing: the ability to change one’s perspective on difficult situations when avoidance is not an option. Kross introduces the concept of reframing (also known as reappraisal or cognitive change) through the ABC model: Adverse event, Belief, and Consequence. The chapter posits that even when someone cannot change an adverse event (A), they can change their beliefs (B) about the event, which can then alter the emotional consequences (C). This approach forms the foundation of cognitive behavioral therapy, one of the most empirically supported therapeutic modalities worldwide. However, Kross highlights what he terms “the reframing paradox” (99): While reframing is theoretically straightforward, it becomes exceptionally difficult to implement during moments of intense emotion. Psychological research, including Kross’s own neuroimaging studies, demonstrates that individuals prone to worry expend significantly more mental effort attempting to reframe their emotions positively yet achieve less successful outcomes.
The chapter contextualizes this phenomenon within current neuroscientific understanding, explaining how stress impairs the function of the prefrontal cortex—the very brain region needed to effectively reframe experiences. This neurobiological explanation provides valuable insight into why simple advice to “think positively” often fails in practice, validating the experiences of those who struggle with negative thought patterns. Kross’s scientific examination of this paradox places the book within contemporary cognitive neuroscience discourse while acknowledging the limitations of popular self-help approaches that oversimplify emotional regulation.
As a solution to this paradox, Kross introduces several evidence-based distancing techniques that create psychological space between individuals and their problems. These include speaking to oneself in the second or third person (“distanced self-talk”), using a non-native language to discuss problems (the “foreign language effect”), and mental time travel (projecting oneself into the future). His discussion of mental time travel particularly challenges the mindfulness-centered notion, popularized by works such as Eckhart Tolle’s 1997 The Power of Now, that remaining in the present moment is always optimal. Kross instead presents a more nuanced view of psychological well-being that recognizes the value of the uniquely human capacity to project mentally across time.



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