Our ego

Sun is our ego and individuality. So, the house where your Sun lies is tightly connected with your ego. Ego can be hurt and can be boosted.

For example, if you want to boost an ego of a person with a Sun in the 9th house - the house of education and knowledge, praise his intelligence and erudition. But if you want to hurt this person, call him an amateur who lacks profound knowledge in the topic. [You'll become an enemy #1 tho]

Immune system and health
Also, Sun is our eyesight and immune system, and if you don't work with the house, where your Sun lies, your immune system can suffer.

For example, your Sun is in the 10th house - the house of career and social realization. If you're unemployed, your immune system gonna be weak until this person finds a job.

Ambitions
Also, Sun is our ambition, and it wants to enhance the house it lies in.

For example, Sun in the 8th house - house of sex and everything secret and unrevealed - wants to be the best sexual partner in the world (we're not kidding, duh).

Of course, things are much deeper. Sun is one of the fundamentals of our life purpose. It's our ability to achieve goals, see things clearly, public image, and so on.

Calculate your chart on saturn.love and learn about your Sun and your life purpose because Sun is essential planets for achieving ypur goals.