This document discusses how advertising agencies need to transform how they approach proposal writing for clients. It argues that agencies are no longer in a dominant position and are seen as commodities, while clients now expect agencies to take a more strategic approach to brand problems similar to management consulting firms. The document advocates that agencies should frame each proposal opportunity as a "contest of one" by analyzing the client's strategic brand issues, explaining their unique approach to developing solutions, and setting principles for the working relationship, rather than just responding to clients' requests for proposals. This strategic framing is presented as key for agencies to differentiate themselves and move away from being viewed as interchangeable creative vendors.