To use this method, start from either the Lot of Spirit (career), Lot of Fortune (health) or Lot of Eros (love) in a natal birth chart (rules for calculation at this link) and the sign of the Lot will determine the length of the first chapter in a given aspect of life (listed below). The length of the second chapter will be determined by the next sign in the zodiac calendar, and so on.
It should be mentioned that a year in zodiacal releasing is 360 days instead of 365 or 366 days, so chapters do not normally change exactly on a person's birthday. The length of each chapter by sign is listed below according to the zodiac calendar.
- Aries: 15 years
- Taurus: 8 years
- Gemini: 20 years
- Cancer: 25 years
- Leo: 19 years
- Virgo: 20 years
- Libra: 8 years
- Scorpio: 15 years
- Sagittarius: 12 years
- Capricorn: 27 years
- Aquarius: 30 years
- Pisces: 12 years
Source: theastrologypodcast.com