Psychology
15 minutesPDF
Pre-Decision Checklist
Your worst decisions felt right when you made them.
Ten written questions before any hard-to-undo decision — a wake-up call to your brain's slow system, the one that isn't so easily fooled.
The job you took in a hurry, the purchase that 'was obvious', the yes you said to avoid awkwardness. None of those decisions felt like mistakes. That's how mistakes work: dressed as certainty.
Why it works
Kahneman proved it across decades of experiments: the brain decides with two systems. System 1 is fast, automatic, and absolutely sure of itself — and its errors don't feel like errors, they feel like certainties. System 2 is slow, analytical, and lazy: it only shows up if you call it.