Most people who start companies do so because they're passionate about what they’re selling. "While that’s important, it can also become a trap, blinding the entrepreneur to business opportunities that exist within the idea. It may seem crazy at first, but author John Warrillow talks about the idea that entrepreneurs should build their businesses in a way that makes them sellable. His book, Built to Sell: Creating a Business That Can Thrive Without You, makes the clear case that even if one doesn’t end up selling their company, building it in this way will make it even more successful for the people who stay with it."