Caroline Miller developed an eating disorder as a child. In 9th grade, after she learned that tonsillectomy patients didn't eat for several days after their surgery, she talked her doctor into removing her tonsils. For the next eight years, she suffered from bulimia.

Miller attended Harvard University and then found a job with the Wall Street Journal. None of her family, including her husband, was aware of her eating disorder. In February 1984, she decided it was time to seek help and began to attend therapy. She eventually overcame her disorder.

Miller chronicled her fight with bulimia in the memoir My Name is Caroline. She recounted that "It wasn't easy to go public about it, because bulimia still has that shame stigma attached to it." The book was excerpted in Family Circle in 1988.

She has written several other books, including Feeding the Soul and Bright Words for Dark Days. She also partnered with Dr. Michael B. Frisch, a clinical psychiatrist, to write Creating Your Best Life: The Ultimate Life List Guide.

Following her struggle with bulimia, Miller received a Master's degree in applied positive psychology from the University of Pennsylvania. She then became a life coach in Bethesda, Maryland.