20 Months in, 2K Hours Spent and 200K € Lost. A Story About Resilience and the Sunk Cost Fallacy

TL;DR: It can be really hard to know if we’re just resilient or falling for the sunk cost fallacy.

I’ve been working for ~20 months on my current project, spent 2K hours on it, and “lost” 200K € by not doing something else. That project is not ready yet. Here’s the story behind it.

Update 2021–02–28: I posted a follow-up: https://medium.datadriveninvestor.com/21-months-in-and-80k-views-later-a01eb8a05898