When I built one of my early products, I obsessed over making it perfect. Every animation was smooth. Every button looked great. The code was clean. The only problem? Nobody actually needed it. I confused building with making progress. That mistake taught me more than any successful launch ever could. Here are the lessons I wish someone had told me. Lesson 1: Validate before you build An idea isn't validated because your friends say it's cool. Talk to the people who would a...