Sun in 1st House
In astrology the Sun represents the self, the ego, character, individuality and the unique gift that one has to offer the world. When most of us begin to study astrology we start with getting a better understanding of our Sun sign and in popular culture when you ask someone what their astrological sign is they almost always respond by telling you their Sun sign. Most people who have studied astrology in any depth understand that the Sun is but one variable of many but because your Sun represents how you see yourself and arguably who you are on a soul level it is a significant factor in your chart.
As with anything in astrology everything in your chart is impacted by everything else in your chart. So it is important to study the chart as a whole. Aspects to the Sun or relationship between the Sun placement and other key placements of your chart can impact how your Sun placement manifests.
The house placement of the Sun as the “you” who you see yourself as being; how you define yourself and your place in the world. It also represents how you would like the world to see you; the area that you tend to shine your light on. The house that the Sun is in in your chart also reflects the area of your life where you feel it’s most vital that you express your individuality and set yourself apart from others. Let me just start out by saying that there is no good or bad Sun placement, all placements exist to help you accomplish what you are here to do in life and all can be run in shadow or light.
With the Sun in the first house you strongly identify with your personality and individualism. You see yourself as being unique and special and in order to feel fulfilled in life you need to be really seen and valued for who you are as an individual. With this placement you are likely very charismatic and tend to naturally draw attention. When you speak people listen and sometimes you may find it difficult to disappear into a crowd. It is likely you feel a pull towards being the centre of attention but can find it difficult to learn how to use the attention you draw in a positive and empowering way.
Sun in the 1st House
You identify strongly with the image you present to others. You make an impression on others - you have "presence" - and you know it. You are self-conscious, although you may prefer to project a strong image. You will feel at your best when you make a mark on the world, but avoid obsessing over what others think of you. Accept that you need to be a leader or an innovator, and go for it, but be careful not to be overbearing with others.
Alternate interpretation: With the Sun’s energy in the First House, your personality drive will find expression mainly through personal issues related to self-image, physical appearance and personal interests. You are required to acquire knowledge of self in order to sustain a true sense of identity, purpose and destiny. Strong will-power and self-assurance add strength to your personality. Very brave, positive and competitive, you develop natural leadership qualities.
Your enterprising nature, with a capability for seizing opportunities is another factor for success - obstacles are overcome by sheer physical courage. You are to become self-determined and self-sufficient, carving your own path in life. Your enthusiasm for life may manifest as robust health and vitality. There may be some tendency to pride and insolence at times.