How does Astrology help you to understand the difference between who you think you are, who you are actually, and how others perceive you?
Every person has three windows to his personality, What he thinks he is, what he is, and what others think he is. So, if you want to bring changes in your personality, what would you do and which one would you approach? It's a difficult situation to deal with. If you change the way you think about yourself, that would affect the actions you do which in turn will change the way others see you. If you take the approach of changing who you are, then the challenge comes whether you want to align it to what you think you are and what others think you are. Finally, if you want to change how others look at you, you need external tools like PR, image management, etc.
Astrology and Personality
What if I tell you that there is an astrological way of dealing with this issue? Let me explain. Your basic Lagna Chart will tell you what you think you are. In palmistry, it is like your left hand. Your Navamsa Lagna is what you are. All the experiences that mold you into a personality trait are your navamsa. Finally, your Arudha lagna is how others see you.
What is Arudha Lagna, and how is it determined?
Arudha Lagna is the derivative of your Lagna of your Rashi chart. It is determined by first determining the distance between the Lagna and the house where the Lagna Lord is placed. and then counting that many houses from the house where Lagna lord is placed. If I take my own example, my Lagna is Virgo or Kanya Lagna. Its lord is Mercury who is placed in the 2nd house which is Libra. So, I have to count 2 houses from Libra which is Scorpio. So, my Arudha Lagna is Scorpio.
Thus my Rashi chart Lagna which is Virgo is what I am. That means I see myself as a typical Virgo. But the Lagna of my Navamsa, which is Aries is what I am. So, life has turned me from a Virgo to an Arian. How others see me is my Arudha lagna, which I determined to be a Scorpio. So, others see me as a Scorpio.
Interpretation
If I interpret it for myself, I see myself as a Virgo, which is a dual sign ruled by Mercury, a planet that is dual in nature and linked to communication. I see duality in myself, my personality, my behavior, and my communication. But what I am is an Arian, which is a movable sign lorded by Mars, a fiery planet. The situations in life have removed the duality from my mind and made me more of an Arian who has strong and intense emotions. My Arudha Lagna is Scorpio which is a fixed sign lorded by both Mars and Ketu. Others see me as a person who is fixed and has a streak of Ketu personality, which is of a renouncer.
Usage of these in defining your personality
I have oversimplified the above example and it was done to explain the concept. In real life, things are not that easy. Your personality can be constructed by keeping your lagna, Navamsa, and Arudha lagna together and building an ideal personality for yourself. It is also done after looking at the various planetary placements, planetary aspects, and strength of each planet located in different houses.
Go to an image manager and a PR professional after understanding how all three lagnas are placed in your chart. You will have a lot to talk about to your PR manager and he will be better equipped to build your personality in a better and more accurate fashion.