This book explores the lifestyles of wealthy women who have achieved financial success without sacrificing their values or lifestyle. Through interviews and case studies, author Thomas J. Stanley reveals the secrets of these women and how they have achieved wealth and financial independence. He examines their attitudes, values, and behaviors
From Wikipedia
The Millionaire Next Door: The Surprising Secrets of America's Wealthy (ISBN 0-671-01520-6) is a 1996 book by Thomas J. Stanley and William D. Danko. The book is a compilation of research done by the two authors in the profiles of American millionaires.