How to brainstorm great business ideas?

*Problem First, Solution Last: Start by focusing on the problem you want to solve. Your product should be the last thing you think about because it's the most flexible. Constraints exist in the problem, market, distribution channels, and monetization model. *Recognizing a Good Problem: - Many people should have the problem (a few hundred thousand is usually enough for indie hackers). - You should genuinely like talking to these potential customers. - Ideally, you share the same problem as your target audience. - The problem should be a growing one and encountered frequently. - Most importantly, it should be a valuable problem that people are willing to pay money to solve.