With companies like AT&T, Information Systems, Chemical Bank, Manufacturer's Hanover Trust, Motorola, and the United States Postal Service, Stephan Schiffman has taught nearly half a million salesmen. Health-care services. Cold Calling Methods (That Really Work!) and Closing Techniques (That Really Work!) are two of his best-selling books. Steve Schiffman's website is www.steveschiffman.com.