This document provides profiles of 40 marketing professionals under the age of 40 who have been recognized for their accomplishments and leadership in the field of direct marketing. Each profile is 1-2 paragraphs and provides information about the individual's career experiences and achievements, as well as a defining moment, recommended reading, and words of advice. The profiles showcase a diverse group of talented marketing leaders who are helping to advance the industry through innovative initiatives and a strong focus on metrics, technology, and customer relationships.