In this third seminar of the series, I recap the logical sequence and relationship between what I refer to as the 1st, 2nd, and 3rd strands of the "Fabric of Psychology" and introduce and elaborate upon the 4th strand (epistemology, specifically the strongest theory of knowledge) and the fundamental role it plays for anyone seeking to achieve immunity to stress and negative emotions. I also offer an example of how an aspect of the weaker theory of knowledge may effectively be used in this process. Additionally, in the Q&A I address a common misconception that emotion equals appreciation, and explain what actually equates to appreciation.