Ask HN: Loosing Faith - the startup killer

I'm coding for 15 years, I've met a bunch of of bright, skilled and motivated people trying to build "their own project": Nearly everyone of them had on some point the idea to build a startup, a small web project, a passive income business. And mostly everyone, including myself, failed. We've failed not because nobody wanted our product. Or because of missing programming skills. We've failed because we've lost faith in our product! We may have started, wrote weeks of code, played with it. And finally abandoned it without finishing it. I'm not talking about "missing market"/lack of customer acceptance. We just were not able to finish it. What I wonder: We're all intelligent enough to understand, that it probably takes some time to finish a product (SaaS app for example). We all now, that it takes some time to get a few beta customers and even more time and hard work to attract paying customers in the end. And we are all aware of idiots bashing every new idea, tellung us things like "tha