What it takes to attain the Oversoul or "Higher-self"

[Adonai One]

It is my belief the oversoul only exists after all relevant potentialities come into existence as the yellow-ray is activated in an entity. Else you're looking at an infinite pool of potential origins and entities which is the "oversoul" of the octave itself.

For the developed entity considering attaining the oversoul, acceptance of the individual self would be, at minimum, something that would need to be balanced and refined.