Erin Sullivan was a consultant astrologer, author, and teacher whose work united astrology, mythology, archetypal psychology, and practical consultation. Her approach was contemporary and psychologically informed, with a strong emphasis on one-to-one counseling, the uniqueness of the individual chart, and the relationship between inner development and outer life. She was widely known for her books on transits, retrogrades, family dynamics, midlife, relocation, and planetary symbolism, and for her longstanding role as an international lecturer and teacher.