How To Stop Overthinking Things You Can’t Control With Dr Hannah Critchlow

The human brain isn’t just wired for thought—it’s evolutionarily programmed to fear uncertainty more than actual harm, with studies showing people would rather endure a predictable electric shock than face the anxiety of not knowing if one will come. Dr. Hannah Critchlow, neuroscientist and author, reveals that breakups aren’t just emotional—they’re neurological traumas, severing a 'transactive memory bank' that once shared cognitive load, leaving the brain feeling like it’s lost an external hard drive. This deep dive into the brain’s need for predictability underscores why overthinking uncontrollable events isn’t a flaw, but a survival mechanism gone haywire in modern life. Yet Critchlow offers a science-backed roadmap to reclaim mental clarity: morning runs to fuel neurogenesis, a consistent 'work uniform' to anchor identity under pressure, and box breathing to reset the nervous system. She argues that emotional intelligence—our ability to read ourselves and others—is the single greatest predictor of life satisfaction and academic success, surpassing IQ. Simple, embodied practices like reading fiction, singing together, or tuning into your heartbeat can synchronize brainwaves and build empathy, proving that connection is not just emotional but neurological. As AI reshapes cognition, Critchlow dismantles myths that it makes us dumber, exposing flawed studies and reframing AI as a tool that demands higher-order thinking—like calculators did for math.