Why is it important to have self knowledge? Because you cannot use the full potential of your mind if you really don’t understand how it works. You might think, for example, that becoming a great real estate investor has nothing to do with knowing anything about yourself. But in reality, we are not rational machines, nor can we be. We are under the influence of many different ideas and feelings that are going on just below the surface. You might think that you have negotiated a great deal, when in reality you have fallen prey to simplest appeals to your ego and other negotiating tricks used by the other side. How would you know, if you are ignorant of the workings of your own mind? That is one example of the thousands we could look at. Another? You take advice from internal thoughts you assume are your “self.” Are they?