The first necessity for obtaining self-knowledge is to become profoundly conscious of ignorance; to feel with every fibre of the heart that one is ceaselessly self-deceived.
The second requisite is the still deeper conviction that such knowledge—such intuitive and certain knowledge—can be obtained by effort.
The third and most important is an indomitable determination to obtain and face that knowledge.
Self-knowledge of this kind is unattainable by what men usually call "self-analysis." It is not reached by reasoning or any brain process; for it is the awakening to consciousness of the Divine nature of man.
To obtain this knowledge is a greater achievement than to command the elements or to know the future.
Collected Writings 8:108 [Lucifer, 1.2 (October, 1887): 89] [Authorship somewhat uncertain, but presumably by HPB.]