Indian numerology has a long history dating back to ancient Vedic texts and has traditionally been practiced predominantly in Southern India. It is a distinct system of numerology that is based on assigning numbers to letters from 1 to 8 rather than 1 to 9 as in other systems. The three most important numbers in Indian numerology are the name number, destiny number, and psychic number. The name number is based on one's commonly used name and influences relationships. The destiny number is based on one's date of birth and impacts one after age 30. The psychic number is also based on one's date of birth and influences one's self-view and career path until age 30.