This document contains the final lesson of Charles Haanel's Master Key System course. It discusses how developing an understanding of the Universal Mind and one's connection to it allows one to manifest positive conditions by thinking the truth. It emphasizes that the Universal Mind is omnipresent and creative, and one can access it within to overcome error, lack, disease or limitations by convincing themselves of the truth. Practicing focused, sustained truthful thinking will enable one to express ideal conditions in their life and environment.