Ask someone. That's it. Go out there into the world, and ask people what they think. Sounds too simple, doesn't it? But most people don't do that. They're afraid that they might be told something that they don't want to hear. Or they'll be talked out of their dream or strategy. Or that stronger personalities might co-opt their idea, mold it, and it will look totally different from when they started. So they just stop and talk to no one.