Rin wrote:But the only way to find out for good is to reach the peak ourselves

Quite right.
Well, it's time to talk about the main idea behind this topic.
My plan was / is to empower myself with raw life force, via a very simple method.
How?
First I have to explain the metaphysics of this method.
So KIA is the unity of will and perception.
Our mind sees them as separate things, but the truth is they are one.
KIA is, on the other hand, the life force of the Universe.
It's your very soul... it's "everything's" very soul.
Magicians use gnosis to empower their KIA.
No, it's incorrect to use the word "empower"... to "release" is better.
One has to achieve this no-mind state to let his / her inner power loose.
The Ouruboros symbol from alchemy gave me an idea - let's say that snake is KIA.
It bites its own tail, forming a circle.
It's like our KIA / mind interface: the One that acts as two.
So one has to understand (?) this paradox to take the next step to his / her own (KIA's) freedom.
The method is very simple - the magician draws pure life force from a symbolic "gateway".
(Remember: this very act is a paradox itself!
Lifeforce 'is'. It's consciousness, not some energy. It's "God", buried in you mind.)
The very act of absorbing this life force is basically pure self-perfecting; an upward spiral that gives KIA more and more freedom.
By accumulating this "energy", the magician let his / her own mind and body to develop various "improvements" through their core, KIA.
In theory, this method is very productive.
Followers of the psychological model can find it a good way to improve their life (in various ways).
Although I'm not using this at the moment (I'm experimtenting with another belief-system), but I found it very interesting.
I felt my mind and body energized, sometimes I couldn't even sleep.
The only cons were: a weird feeling of "overstimulation" and sometimes I feared that too much life force would alienate me from my environment (maybe I just overcomplicated things, because I don't have any evidence that this is true).
"Nothing is true. Everything is permitted."