If the ‘Self is not the ‘I’ then what is the use of saying ‘I AM THIS’ or ‘I AM’ THAT there is no individual to say ‘I AM THIS’ or ‘I AM’ THAT.+

The ‘Self’ is not the ‘I’ but the ‘Self’ is the Soul, which is without the form, time, and space. The ‘Self is not the ‘I’ because ‘I’ is present only within the domain of the form, time, and space.

If the ‘Self is not the ‘I’ then what is the use of saying ‘I AM THIS’ or ‘I AM’ THAT there is no individual to say ‘I AM THIS’ or ‘I AM THAT'.

The Soul is ‘I- LESS” because it is without form, time, and space.

Do not stick to the ‘I’. Stick to the Soul, which is the cause of the ‘I’ and it itself is uncaused. The Soul is the ‘Self’.

The Soul, which is present in the form of consciousness, is the ultimate truth or Brahman or God in truth. The ‘I’ is merely an illusion.

If you stick to the ‘I’ then you are sticking to the illusion. If you stick to the Soul then you are sticking to the truth, which is beyond form, time, and space.

The Soul is permanent and the ‘I’ is impermanent.

That is why Bhagavad Gita: ~ “The permanent is always there, only the transient ‘I’ comes and goes. (2.18)

The ‘I’ hides the Soul, the Self, which is present in the form of consciousness. 

People think the ‘I’ without the body is the Self. The seeker has to understand the fact that ‘I’ is not the Self, but the witness of the ‘I’ is the true Self, which is eternal.

That is why Ashtavakra Gita 16:10:~ If you desire liberation, but you still say "I," If you feel the ‘Self’ is the ‘I’, You are not a wise man or a seeker. You are simply a man who suffers.

People are stuck with the reality of the ‘I’, which they take as real because some Gurus have propagated the Self is the ‘I’. is no need to convince such mindsets. The seeker of truth accepts only the truth nothing but the truth.
Remember:~ 

All the ‘I-centric’ Gurus and their teachings are a great obstacle to unfolding the truth hidden by the ‘I’. The ‘I’ itself is ignorance.

As the seeker becomes more and more Soulcentric, he realizes the fact that the ‘Self is not ‘I’ but the ‘Self’ is the Soul, which is hidden by the ‘I’. 

From the standpoint of the Soul, the ‘I’ is merely an illusion created out of the Soul. It is necessary for the seeker to realize, what is ‘I’? - supposed to be in actuality.

The ‘I’ is present only when the mind is present. Without the ‘I’ the mind ceases to exist.

The mind is present when the universe is present. Without mind, the universe ceases to exist.

The universe is present only when the waking is present. Without the universe, the waking ceases to exist.

So, without the ‘I’ the mind or universe or the waking cease to exist.

From the standpoint of the Soul is the ‘Self’, the ‘I’ the mind or universe or the waking cease to exist as a reality.

The Soul is the  ‘Self’ that can remain with or without the ‘I’.  Slowly but surely you must imbibe the truth, which is hidden by the form, time, and space by realizing the form, time and space are one in essence.

When you enthrone the Soul, which is present in the form of consciousness in your subconscious, you will realize the world in which you exist is merely an illusory play of consciousness.

Consciousness is ‘One’, and all divisions of form, time, and space are illusory. Be established in this Advaitic Truth, which is eternal. : ~ Santthosh Kumaar