This faulty belief is at the top of the pyramid of beliefs in all humans, and all other beliefs support its apex position, which is why they are so adamant in their belief ("It's settled.") Which of course means, "No further discussion is necessary, requested or even allowed, and if you attempt to change my mind, I might get medieval on your ass!"
For the masses - the great 95%, who are not even interested in "Self Perfection, Transcendence, Cosmic Consciousness", and other such silliness - it really doesn't matter, because they are not even TRYING (making effort) to go anywhere "esoterically spiritual". But for the rest - the lesser 5%, who ARE quite interested in these "esoterically spiritual" directions and endeavors - it is the most toxic belief they can have, because of the way it acts as a final WALL through which the aspirant can never otherwise pass. The sooner they discover this, and excise (or exorcise) it, the better things will be for them in these certain, usually quite time-consuming pursuits.
There is an idea that reads: "Blessed is he who has a soul, blessed is he who has none, woe and sorrow to him who has it in conception." (mentioned here, because there are so many GIG/PDO people here, though there are similar ideas in Christianity, Buddhism, Islam, Kaballah, etc.) "In conception" is where Humanity does reside, must reside until Real Success is achieved (i.e., the full and complete flowering of the Concept, a New Birth), and Real Failure is always possible in those who continue to harbor toxic beliefs for too long, meaning, they totally miss the point.
Enlightenment is a JOKE, that nearly 100% of Humanity simply don't get. Maybe 1% do get it, which is why they 1) don't take themselves seriously, 2) don't take the world seriously, and 3) don't take LIFE seriously. Everyone else, takes all these things so seriously that literal and figurative wars are continually being fought in order to PUSH one main (set of) idea(s) upon the minds of those they 1) wish to follow them, or support them, and 2) wish to defeat, or kill. But, remember, it all starts with a Fantasy Belief: "I believe what I believe, and thus it is settled!" This is where the masses and then some live, and they are the Sheeple who run the world and get run over by it, as all of them have Masters they do NOT even suspect.
Now, for the 5% - interested in these "esoterically spiritual" endeavors - who say "I am seeking in order to FIND", they have it in conception only, and the Apex Belief is still a controlling part of their makeup. It must be excised, or (the much better term) exorcised (yes, it is like a demon, or entity that has taken hold of them and won't let them go!) Consider certain "followers" of GIG, PDO, JMC, LRH, JZK, DRH, and so many others: they are always heard/read speaking/writing through their hapless followers, who thus never achieve Real Independence of Thought, but remain forever subservient to someone else's thought.
The apex belief can never be dissolved until all the sub-levels have been cleared. The AIM is to get to the bottom, the foundation, completely clear of all beliefs, in order to discover what the pyramid is actually made of. Then rebuild oneself from the ground up: By first becoming completely Uncivilized, one can then become "Newly Civilized".
The chief feature of "the not-awakened not-conscious, not-enlightened" is that they have an over-abundance of BELIEFS - one could even say with a straight face, they are MADE OF BELIEFS, top to bottom. The chief characteristic (if it can be called that) of "the enlightened" (who know a thing or two about thing or two), is that they have NO BELIEFS.PS:
"I believe that I am, Now, after all these many decades, quite Awake!"... is just as toxic as
"I believe that Drumpf should be Dumped because he is a racist and a nazi!"
(Which one do you think is the worst, and why, and how would you dissolve it?)