Numerology is the study of numbers and how they reflect certain aptitudes and character tendencies, as an integral part of the cosmic plan. Each letter has a certain numeric value that provides a related cosmic vibration. The numbers in your birthday and the derived numbers from the letters in your name provide an interrelation of vibrations that yield insight into y our character, purpose in life, what motivates you, and inherent talents, some use numerology to plan major moves and activities such as investment and marriage.