"No matter what you think you do for a living, you're really in 4 businesses at once. The first is the #business you think you're in — the one mentioned on your business card. The second is the #marketing business. Whatever you offer must be marketed. The third business you're in is the service business. Customers must be served and helped from the moment you meet them. The fourth business you're in is the people business. Your products are made by people, marketed by people, sold by people, and offered to people. There's a close correlation between your interest in people and your ability to convince and motivate them."