The true knowledge of the self is not knowledge. It is not something that you find by searching, by looking everywhere. It is not to be found in space or time. Knowledge is but a memory, a pattern of thought, a mental habit. All these are motivated by pleasure and pain. It is because you are goaded by pleasure and pin that you are in search of knowledge. Being oneself is completely beyond these motivations. You cannot be yourself for some reason. You are yourself, and no reason is needed.