The Neophyte must be a skeptic in his own faith, always thinking that ours is the method of science and the goal of religion.
The author of Tarot is not the one who drew it but the one who holds it.
There are only a few more practical tips related to the mantra; when you repeat it, imagine there is a dark cave in the center of the chakra.
This is certainly something like wrestling between Jacob and the Angel, while cunningly saying to himself "How great I am to wrestle with an angel," at the same time being afraid and refusing to wrestle with any material opponent.
He must understand that both him, his vision, and his eyes are only a part of one and the same apparatus, and even when he has completely failed, it is precisely the desire of that mechanism to manifest in this way.