Marshall has always been fascinated by how individuals with similar injuries have dramatic variances in their pain experience. After being in private practice as a chiropractor for 22 years, he joined a large health plan that was developing a coaching program for members—8 years coaching individuals with a variety of chronic conditions and pain and 2 years exclusively coaching chronic neck and back pain members. He had been searching for a program that would allow him to expand his coaching skills and understanding of individuals with chronic pain. Extensive research led to TCC®U— the most comprehensive and experienced coaching program on both counts. Marshall coaches TCC® clients and is a TCC®U faculty member. He spends as much time as possible with his grandson, stays active downhill and cross-country skiing, cycling, and hiking, and enjoys reading historical biography and history. He lives in Minnesota with his wife, and near his daughter and son-in-law.