Vedic astrology reads body, mind, and self together through three coordinates.
When reading a person in Vedic astrology, we don't look at just one place. We look at three anchor points together — Lagna (Ascendant), Moon, and Sun. Each of these three reflects a different layer of you.
The Lagna (Ascendant) is the body, and the whole structure of your life. It's the Rashi that was rising in the east the moment you were born, and it stands for the self who actually lives day to day in the real world. In Vedic astrology it's the primary frame for judging the whole chart, so the Lagna is always the starting point for counting the rooms (bhavas) too.
The Moon (Chandra) is your mind. It shows the grain of your perception — how you take in and feel the world. Vedic astrology treats this Moon as especially important, so everything you'll learn later — the Nakshatra, Dasha, and Sadesati — revolves entirely around the Moon. That's where the saying "Vedic astrology looks at the mind" comes from.
The Sun (Surya) is your self and your life force. It stands for the authority within you, your father, and the direction your soul is headed. If the Lagna is the 'body' and the Moon is the 'mind,' then the Sun is the 'core self.'
Let's clear up one common misunderstanding here. People sometimes say flatly that "the West looks at the Sun, Vedic astrology looks at the Moon" — but that's not quite accurate. Unlike the West's popular horoscope, which likes to use the Sun sign, Vedic astrology reads by treating the Lagna and Moon as especially important, and taking in the Sun alongside them. (These three are sometimes grouped together as the 'Vedic Big Three,' but that's a modern explanation borrowed from the West's Big Three structure.)
This content is for reference and entertainment, based on traditional Chinese metaphysics and astrology.