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The Conversation
The Conversation
Igor Grossmann, Professor of Psychology, University of Waterloo

Why you’re wise on Tuesday and foolish on Sunday: Practising wisdom in uncertain times

It’s that time of year when the internet turns into a giant group chat about self-improvement. New year, new you. Better habits. Better boundaries. A year older, and maybe wiser.

Right on cue, the wisdom hucksters appear. They are the “one weird trick” crowd — the gurus with a microphone, a smirk and a promise of instant ascendance if you just buy the book, sign up for the training program, use their AI tool or subscribe to their Substack.

But there is no “enlightenment pill” that works overnight and never wears off. The evidence points the other direction: wisdom isn’t a permanent halo you wear. It’s a set of mental processes you can practise — and lose — depending on whether it’s a calm Tuesday or a stressful Sunday.

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