Miller's interest in astrology began in her early childhood, when she would read her mother's astrology books. She started writing about astrology in the 1980s, and her first column, "The Astrological Forecast," appeared in _Glamour_ in 1989. Her column quickly became popular, and she soon began writing for other publications, including _Vogue_, _The New York Times_, and _The Wall Street Journal_.
In 1995, Miller founded her own website, AstrologyZone.com, where she provides daily, weekly, and monthly horoscopes, as well as articles on astrology and self-help. Her website has become one of the most popular astrology sites in the world, with millions of visitors each month.
In addition to her work as an astrologer, Miller is also a popular speaker and has given lectures at universities, corporations, and conferences around the world. She has also appeared on television and radio shows, including _The Oprah Winfrey Show_, _The Tonight Show_, and _Good Morning America_.
Miller's astrology is based on the belief that the movements of the stars and planets can influence our lives. She uses her knowledge of astrology to help people make informed decisions about their careers, relationships, and finances. She also believes that astrology can help people to better understand themselves and their place in the world.
Miller's work has been praised by some for its accuracy and insight, while others have criticized it as being too simplistic and unscientific. However, there is no doubt that she has had a significant impact on the world of astrology, and she is one of the most influential astrologers of our time.