Dear Ramana,
No matter how much we look into and see, it is absolutely sure that there are no 2 selves, i.e. an ajnani and a Self. There is but one, only one and that is Self alone!
and, when we look in deeply and discern, there is really no Sub Consciousness, Substratum of everything, Super Consciousness, etc... these are just terms used at various instances only for the purposes of discernment. There is just Consciousness alone, which the Vedas call Brahman, Atma, Tat, Aham.
And, moreover, the Moon derives its light from Sun only, can we say that the moon has its own light? therefore, these relative terms that are used are as good as the moon light, which itself derives its light from Sun only!
So long, one thinks he is individual, he suffers. When he realises that there is no individual, that, the individuality existed only like the thought that the moon has its own light, or, like the existence of darkness, or like the horns of a rabbit!
There is no individuality! This are the words of all the Sages of the Yore! But until we are able to see this, they say it is all karma!
Karma ends the same way as darkness! Every day, when the Sun rises, where does darkness go? there is no place to even hide! Where is the snake, in the Snake-Rope phenomenon? The existence of Karma and Individuality exists the same way as the belief of existence of a snake and karma also is just a product of that non existent snake only!
It really is not!
Salutations to Bhagavan