Lee Eisenberg is an American author and entrepreneur known for his work in the fields of business and personal development. He gained recognition for his books, including The Number: A Completely Different Way to Think About the Rest of Your Life, which explores the concept of financial security and life satisfaction. Eisenberg's writing often combines practical advice with personal anecdotes, making complex ideas accessible to a broad audience. In addition to his writing, Eisenberg has held various leadership roles in the business world, contributing to his expertise in consumer behavior and marketing. His insights have been featured in numerous publications, and he is a sought-after speaker at conferences and events focused on personal finance and career development.