- Published
- Updated June 14, 2026
- Life by Design > Mental models > Sunk Cost Fallacy
Mental Models for solopreneurs
How to use Sunk Cost Fallacy
1 Mindset shift
2 When to use it
3 How to use it
Ignore past investments when evaluating future choices.
When deciding whether to continue something.
Pretend you've invested nothing before now. Would you still choose this path today?
Nicholas Robb
Founder, Design Hero
Author of Life by Design
Nicholas@lifebydesign.online