That’s Erin Halperin’s real estate mantra. Buying or selling a home is a big, complicated business that most people approach with trepidation. But most people haven’t met Erin. Real estate and design are in her blood. She’s the daughter of a Chicago broker, was trained by an interior designer, and now, with more than 17 years of experience to her name, she is one of the Upstate’s most knowledgeable real estate agents.