A contestant on this year's series of Alone Australia, a show where the person who survives the longest alone in the wilderness wins, made a significant psychological error.
He said he was aiming for 100 days.
He should have aimed for 101.
In this clip I explain the thresholds that change behaviour, whether we're running a marathon, lifting weights or pricing products.
See whether you can work out why I think the Alone contestant should have aimed for 101 days.
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