Many people fail in business because they are terrified of annoying their customers. They stay quiet and never ask for the sale because they are afraid of rejection. This fear is the biggest obstacle to your success. If you truly believe your product can help someone, staying silent is selfish. Brian Chesky and the founders of Airbnb were once broke and sleeping on the floor. To save his company, he flew to New York and knocked on doors to talk to his users. He asked hard questions and took better photos of their apartments himself. This bold move helped turn his struggling startup into a multi-billion dollar empire.