I've been trying to build my first SaaS, but I keep getting stuck at the same point. I come up with an idea, build a landing page, talk to a few people, get mixed feedback, and then start wondering if I'm solving a problem that's actually painful enough for people to pay for. It feels like every idea has competitors, and everyone says "validate first," but I honestly don't know what real validation looks like. How do you personally go from: Having an idea Deciding it's wo...