You will only manage to develop true clairvoyance when you rise to the highest part of your being, to your higher self

"You will only manage to develop true clairvoyance when you rise to the highest part of your being, to your higher self. Every day imagine yourself reaching that higher self and becoming one with it. Imagine you have reached the summit, and from there you cast your eyes out into the universe... And because your higher self is omniscient and you have become one with it, all the knowledge you have already acquired, without realizing it, gradually descends into your consciousness, and you are dazzled by all you are suddenly able to perceive and understand. The only true vision is that which is given to you by the eyes of the spirit. To begin with, of course, it seems as if you see nothing, as if you understand nothing, but you are preparing the ground for true clairvoyance."