Gastei R$20 mil e DELETEI TUDO - 5 erros ao criar meu SaaS

I spent two months programming a complete system with Next.js, C#, PostgreSQL... and when I showed it to the first user, I had to delete almost everything. In this video, I share the 5 brutal mistakes I made when creating CodeMindra, a SaaS for therapists, and how you can avoid them in your project. ⏱️ VIDEO CONTENT: The story of how I spent R$20,000 (in consulting fees) The context: direct access to 15 potential clients Mistake #1: Assuming I knew the problem 2 months of coding alone (280 hours) The feedback that hurt: "That's not how I work" How to start over: validation with 3 real clients Version 2: 2 weeks and 80 hours (vs. 2 months) 5 Practical Lessons I Learned Build in Public: building transparently 💡 KEY LESSONS: ✅ Validate BEFORE coding - always! ✅ Talk to 5-10 users before creating the MVP ✅ MVP = Minimum Viable, not Minimum Possible (3-5 key features) ✅ Test as soon as possible - don't wait until it's perfect ✅ Negative feedback is golden - better than empty praise 📊 REAL NUMBERS: Version 1 (wrong): 2 months | 280 hours Version 2 (right): 2 weeks | 80 hours Savings: 200 hours Consulting cost: R$20,000 wasted 🛠️ TECHNOLOGIES USED: Next.js + React + Tailwind Backend: C# + PostgreSQL Integrations: Stripe for payments Hosting: Vercel + Supabase (free tier) 🔗 JOIN THE BETA: codemindra.com/beta (Limited spots for therapists and healthcare professionals) Personalized support Active voice in the build Lifetime discount 15 days to public launch 📈 CURRENT PROGRESS: 5 therapists actively using 10-15 beta testers recruited Expected launch: 15 days 💬 Have you ever been there? Ever created something that no one wanted to use? Share your experience!