Numerology is the predictive science which uses numbers just as astrology uses the planets. The numbers have their own vibrations which produce various effects and influences on us. The ancient Indian Sankhya Sastra and Anka Shastra deals with this. The numbers from one to nine are used to give predictions by totaling the numbers in ones birth date. The numbers one to nine also have affinity and correlate with the nine planets. Only date based number (like 12 etc in any month) is called your psychic number and is used to judge interpersonal relations with spouse, relatives and friends etc. Your full date of birth number (like 12-5-1986 etc) is called your destiny number and is used for matters related to your profession, finance etc. Hence by totaling the numbers of your full name, as given at birth by your parents or relatives, a number is arrived at and it is called your soul number and reveals your personality and traits.