The First House of the natal chart is considered an angular house, and is traditionally ruled by Aries and Mars. It is located on the east (left) side of the chart and its cusp is called the Ascendant of the natal chart. The sign in which the Ascendant is located is called the rising sign, because at the moment of birth it rises on the eastern horizon.
The First House is also called the sign of the self. It signifies what someone IS. This means, that the body, the mind and the behavior of the native are largely influenced by this house and any planet or mathematical point that is positioned inside it. Everything that has to do with appearance falls under rulership of this house. The areas close to the ascendant are responsible for the physical self, while areas near to the cusp of the second house represent mostly behaviors; thus it is also ruling style, clothing and everything artificial that is part of the native.
The question “Who am I?” is being answered by everything that the first house includes in it. Both at the moment of birth, and during the native’s life when planets keep transiting and transiting, in their constant movement. It rules ll types of beginnings and the view of the world that the chart owner has. The first house signifies the projection of the person towards the world around him, his presence and existence. The full package of what one is, and how he is perceived from whatever surrounds him. The first house particularly rules one’s head and face, and the parts of brain that are responsible for conscious thoughts and actions. We will later see that the hippocampus and other parts that are connected with one’s subconscious are ruled bu the 12th house, especially by the area close to the Ascendant. The Ascendant is the sharp centre of our existence. This is why any planets that are closely conjunct to it, have a very important influence on the body, but also are generally involved in nearly everything. The native is directly projecting those planets’ energy through him.
Any transit through the first house, will impact the native on a highly personal level. In case there are natal planets present in the house, any transit that conjuncts them affects the native in an even stronger way. Because of this, astrological events that occur inside the house can change the self-image and alter the Ego.
It is a rather positive thing to have planets residing in it, especially when they are well-aspected or in some type of enhanced dignity. All planets can manifest in a good way, even malefics as Saturn, Mars or Uranus, when located inside the house. The way they function is depending on the aspects they receive from other planets. The best ones to have though, is the Sun, Jupiter or Venus, as they give good vitality and urge the individual to live and shine. Pluto can give a very intense personality, Mercury a brilliant mind while Neptune and the Moon frequently create a compassionate person. Nevertheless, all planets have both positive and negative traits when positioned in the house of the self, and you can read a lot about them by clicking on the planet you are interested in.