The best business plan is a customer who already wants to pay you. If you have to convince someone they have a problem, you're selling vitamins. Sell painkillers instead.
I treat business ideas like a sports fan treats draft picks. Obsessive analysis, bold predictions, zero filter. Some picks are busts. But when you hit, you hit big.
Information arbitrage is the best edge in business. Read widely across unrelated fields. The person who reads about biology AND marketing AND history connects dots that specialists never see.
I sold a company to Twitch in my twenties and thought I'd figured it out. Then I realized selling a company and knowing how to invest are completely different skills. Humility is expensive but worth it.
Test ideas cheaply before you commit. A landing page costs $50. A prototype costs a weekend. If nobody cares at $50, they won't care at $5 million. The market tells you everything if you bother to ask.