The Psychology of your 20s
The Psychology of your 20s

Nov 12, 2026 · 58 min

Six biases quietly distort decisions in your twenties

480. The 6 cognitive biases that will ruin your 20s

The episode shows how predictable mental shortcuts can derail timelines, relationships, careers, and responses to rejection.

3 key takeaways
  1. 1The planning fallacy and present bias make ambitious timelines and long-term rewards feel more attainable than they are.
  2. 2The sunk cost and impact biases keep people invested in poor fits while exaggerating how devastating change or rejection will be.
  3. 3Recency bias and attribution errors turn recent disappointments into forecasts and other people’s mistakes into character judgments.

Don't miss

The sunk cost discussion connects staying in an unsuitable relationship, career, degree, or place with identity, opportunity cost, and unsafe persistence.

The brief

Gemma frames cognitive biases as fast, shortcut-based thinking that can quietly distort the momentum-building years of the twenties, especially when decisions carry pressure and uncertainty.

The planning fallacy makes goals seem quicker than experience suggests, while present bias favors immediate pleasure over rewards that require sacrifice and delayed gratification.

The sunk cost fallacy explains why people persist in relationships, careers, degrees, or places that no longer serve them, because leaving can feel like admitting wasted investment.

Impact bias exaggerates how intensely future events will affect us, while recency bias turns the latest rejection or disappointment into an overly pessimistic forecast.

The episode closes with fundamental attribution error: people often treat others’ mistakes as character flaws while explaining their own behavior through circumstances.

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