The Sun is the center of the conscious identity, and the energy center of the chart. Just like the actual Sun is the center of our solar system, and everything revolves around it, everything in the chart exists relative to the Sun, even if the Sun does not directly aspect it.
While the Sun is displayed in the chart as a glyph like any other planet, it’s not like the others at all. The Sun actually defines the entire astrological system, because the natal chart is a representation of each planets position on the ecliptic, which is the apparent path of the Sun around the Earth (apparent because the Earth actually revolves around the Sun). The path of the Sun is the band of the sky that the entire natal chart represents.
Any planet that is aspected to the Sun will be more prominent in a person's makeup. The house that the Sun is in will be a significant area of activity for the person. The house that the Sun rules (the house with Leo on the cusp) will also influence how your Sun is expressed.
The Sun rules Leo and is associated with the 5th house.
Of all the planets (in astrology, the Sun and Moon are called planets), the Sun takes on the most “flavor” of the sign and house it is in (see below).
The Sun is more about "being and becoming" than "doing". For example, Virgos love problem-solving, but who they really are is a person who deeply wants to improve the world and help the people around them. It's by focusing on that essence that we develop our personality and become our full selves.
The Sun rules Leo and the 5th house, which are like your inner child—they are focused on play and what makes us naturally joyful. They are spontaneously creative and interact with the world from a place of intrinsic aliveness.
The Sun wants to create, to express, to be and become, in whatever way is indicated by its sign, house placement, and aspects. It wants to shine energy and purpose through the blueprint of you that is your chart, and out into the world.
Your Sun wants you to be the magnificent and unique being that you are. But to do that, you have to really understand who you are. Here are some questions to help you develop your Sun:
To embody your Sun fully, it's imperative that you see your Sun sign positively. As a Virgo, I'm well aware of the criticisms levied at different signs. But if you are a Virgo, you have the right and entitlement to be detail-oriented. You are being who you came here to be. Of course we can all work on not being critical, but the mere fact of caring about details is awesome. That is the attitude you need to have about your Sun sign: love it, own it, express it, live it.
More than anything, the Sun needs permission to shine as it naturally is. It needs support that sees is as intrinsically good and right for being who it is. You can give yourself that support.
To support yourself to develop your Sun, I suggest learning and practicing self-care, self-love, self-acceptance, self-validation, and positive self-talk. There is an incredible amount of negativity and encouragement to compare and self-criticize just floating around in the world. But you can opt out and love yourself exactly as you are, simply because you are.
If you are new to astrology, I recommend reading up on your Sun and Moon sign as a place to start.Be sure to go beyond the surface level descriptions and stereotypes. You can read about the mythology, the associated Gods/Goddesses, the strengths and weaknesses of your sign, as well as more about the element and mode of your sign.
The next step is to look at the house your Sun is in, and learn how the Sun expresses through that house. That combination will tell you a lot about who you are here to become.
Your Sun sign is not an accident. It is exactly where it is for a reason, because your Soul wanted to embody and develop and creatively express this energy in this lifetime!
The Sun rules the sign Leo, which associated with the lion, courage, generosity, and royalty. Whether you are a Leo or not, the Sun still carries the energy of sovereignty, and wants you to develop this quality in yourself.
How do you develop this? Confidence arises from appreciating your own abilities and qualities. So the first thing to do is really understand what is awesome about you, and be willing to own it. Don't compare yourself to other people—instead, find what is uniquely you and hone it, polish it, and love it. You can get a lot further trying to become fully yourself than you could ever get trying to be someone else.
Unfortunately, there are forces working against this. Sometimes social bonds are formed around mutual self-criticism, complaining, or self-limiting belief systems. Some subcultures or communities have a kind of "who do you think you are?" attitude toward people expressing happiness or developing personal power. So your first act of sovereignty may very well involve adjusting your social circles and local environment (including social media consumption) to be more supportive of who you want to be.