Breaking the Sales Barrier: How to Develop Million Dollar Producers An excellent resource for the sales leader, Breaking the Sales Barrier: How to Develop Million Dollar Producers captures and explains the critical elements necessary to manage producers so that they can join the elite of the sales force.This “how to” book is filled with the tools that agency owners and sales managers need to develop a winning sales culture�and what producers need to embrace it. Additional ISBNs 1936362260, 9781936362264Breaking the Sales Barrier is written by Randy Schwantz and published by The National Underwriter Company. ISBNs for Breaking the Sales Barrier are 9781936362776, 1936362775 and the print ISBNs are 9780872183971, 0872183971. Additional ISBNs include 1936362260, 9781936362264.