Mind: Ego blindly guiding us?

For this post I feel that a basic definition of Ego as Freud describes would be helpful to clarify what I am referring to when I use the term Ego----

Id, ego, and super-ego - Wikipedia, the free encyclopedia: "The Ego comprises that organised part of the personality structure that includes defensive, perceptual, intellectual-cognitive, and executive functions. Conscious awareness resides in the ego, although not all of the operations of the ego are conscious. The ego separates what is real. It helps us to organise our thoughts and make sense of them and the world around us.[1]
According to Freud,
“...The ego is that part of the id which has been modified by the direct influence of the external world ... The ego represents what may be called reason and common sense, in contrast to the id, which contains the passions ... in its relation to the id it is like a man on horseback, who has to hold in check the superior strength of the horse; with this difference, that the rider tries to do so with his own strength, while the ego uses borrowed forces [Freud, The Ego and the Id (1923)]”"

My stance is a little different than that of Freud because:
I am thinking a lot these days how the Ego can truly be wrong! It is our filter for reasoning and forming behaviors. My slight obsession with my weight is a result of my perception of reality. Have you ever really questioned your own perceptions??? If the body is looked at as a vessel for the mind/spirit how would it be treated. We need nutritional fuel but our Ego has organized thoughts from past experiences (such as labeling some foods "bad" while labeling others as "good"). Our Ego also has (for many of us females) told us that our value goes up as our jean size goes down. I am striving to be more aware when I am listening to the part of my mind that can be influenced by non-truths! I want to reach my optimal weight and be at my physical potential but not because it makes me a more "loved, wanted or valued" human being. Simply put I want to enjoy the strength and health of a well taken care of body. I will try to embrace my health where it is and treat my body in a way that makes it thrive. My feeling is that we have a part of our psyche that takes in information, processes it and then tries to protect the whole human being. This is the Ego. But the emotional side of our psyche is driven by desires that are rooted in our Spirit. I think it is an inner voice that is fed by a connection to God and guides us to "know better". It is a helpful practice to take some quiet time to analyze your thoughts and feelings. Sometimes you have to tell the Ego to get out of the way so that our spirit can be filled up!