What's Actually Going On
Sunk cost is a trap most people understand in theory but struggle to actually avoid in real decisions — money, time, and effort already invested rationally shouldn't affect future decisions, but in practice, the feeling of "I've already put in this much, it'd be a waste to quit now" is quietly at work behind nearly every hard decision.
This mindset leads people to keep pouring in more, even when they already know a direction isn't working, hoping to "break even" — and the result is usually digging the hole deeper, with losses ending up larger than if they'd cut losses early. A genuinely rational decision should only ask "is it worth continuing to invest from this point forward," not get tangled up in what's already been spent.
A Real Example
A factory had already poured most of a year's resources and budget into one channel, with consistently disappointing results. The owner knew, deep down, that the channel probably wasn't right for their product, but held off adjusting course because "we've already invested this much" — dragging it out several more months before finally deciding to pivot, losing avoidable cost along the way.
So What Should You Actually Do
- When making a decision, deliberately remind yourself to look only at future return on future investment, not get tangled up in what's already spent.
- Set clear cut-loss criteria in advance (a specific date, or a specific performance threshold) so you're not driven by emotion in the moment.
- Bring in someone who wasn't part of the earlier investment and can look at the situation objectively, to help judge alongside you and reduce the chance you're being held hostage by sunk cost.