Sun represents the ego, the conscious self, the identity we have created for ourselves. It is the masculine (yang) principle within us. Sun can also represent our father, or the idea we have of authority. In a woman's chart, the Sun can also signify her husband. The Sun rules over Leo and the 5th house, that is why it can also show how we shine in the world, what we are proud of, our accomplishments our vitality and what brings us joy. Because many people nowadays consider the career the place where they put all their vital energy and the most significant accomplishment in their lives, Sun can show the profession one chooses. If you were born during the day, the Sun is more dominant in your chart than the moon.  

      The Sun has dignity in the sign of domicile (Leo) in the exaltations sign (Aries) and the remaining Fire sign of Sagittarius. Dignity means it does well in the sign because the characteristics of the sign align with the traits of the planet. Leo is the joyous sign of creativity and courage while Aries is the sign of individuality and initiation, both being in harmony with what the Sun represents.The sun is afflicted in its detriment sign of Libra and in its sign of fall Aquarius. Libra is preoccupied with others and the identity is often sacrificed in the name of collaboration and Aquarius is focused on the group forsaking yet again the ego.