🔮 The road to success requires self-confidence, an ironclad work ethic, book- and street-smarts, and… a little bit of delusion. Throughout history, the most pivotal advancements often began with a what-if. When Thomas Edison thought to bring the light bulb to life, he was called delusional — and he was, but still did it. That, ladies and gentlemen, is called delusional optimism: being “completely unreasonable” about how good something can get, according to bestselling author and mindfulness coach Case Kenny.

The science behind delusional thinking

What we tell ourselves and what we believe doesn’t just reflect a present reality — but rather shapes it. Research from the University of Edinburgh shows how our brains operate as engines of “probabilistic prediction,” continuously generating scenarios based on prior knowledge, beliefs, and expectations, which then meet with physical sensory inputs, resulting in a conscious experience where the brain attempts to minimize the gap between what it expects to happen and what it actually feels is happening.

Language, or rather what we tell ourselves, can act as a programming tool for the mind, creating artificial contexts that can recalibrate how certain situations are perceived. What this means is that continuous self-directed speech may create an influential form of cognitive self-manipulation, allowing the brain to artificially control perception, reasoning, and behavior, according to the study. In short: those morning self-affirmations can actually work.

Delusional optimism, if we’re talking science, is rooted in a phenomenon known as the optimism bias, which essentially is the tendency for us to overestimate the likelihood of positive events coming our way, and vice versa. According to a seminal 2011 study, some 80% of the global human population exhibits this bias, making optimism an integral — and advantageous — part of being human.

How delulu wires us differently

When highly optimistic individuals are faced with negative information, the brain fails to code the information that would require them to tone it down, according to the study. On the other hand, when engaging in positive affirmations and modes of thinking or receiving positive information confirming one’s own optimistic beliefs, the amygdala shows increased activity.

When you’re always expecting positive outcomes, you experience less stress and anxiety, giving your immune system a helping hand. In fact, being optimistic may add a few years to your lifespan too. If we’re talking about delusional optimism in a workplace setting, optimists tend to see value in their work, leading them to work harder, longer, or even more efficiently, producing desirable results that ultimately see them climbing the corporate ladder.

By believing something incredibly positive is possible, we’re inspired to take the necessary steps to reach it, according to Vox. This actively improves the chances of achieving the desired positive results. A self-fulfilling prophecy, essentially — the good kind.

The sweet spot

While a little delusion may go a long way, too much of it can lead to navigating an entirely different plane untethered from reality. If your brain is consistently disregarding negative signals, underestimating — or even ignoring — risk, it’s very likely that you’ll find yourself taking everything for granted in the hopes of it “working out.” Leaning too much on delusional optimism can also lead to glossing over failures and ignoring feedback.

It’s safer to stay optimistic, but keep it real. The sweet spot seems to be what Vox calls optimistic realism — getting the most benefits out of having a positive outlook, without being all too delusional. After all, too much optimism is what led to the 2008 financial crisis.

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