Katha Upanishad 1:2:23 The Soul cannot be realized through hearing scholarly explanation of the discourses, not even by the intellect.

You, your body, and the world in which you exist are impermanent because they are merely an illusion created out of the Soul, the Self, which is unborn eternal.

The Soul, the Self is present in the form of consciousness.

Holding yourself as the real Self is holding the illusory world in which you exist as reality.

When the matter is an illusion created out of the Spirit then Spirit alone is real.

When the object is created out of the subject then the subject alone is real.

When the world in which you exist is created out of consciousness then consciousness alone is real.

Reality and unreality are created out of single stuff because the unreality (the world in which we exist) is experienced as a reality we are unaware of the reality hidden by the unreality.

There is no second thing that exists other than the Soul, which is present in the form of consciousness. The dualistic illusion, which is present in the form of the ‘I’, hides the reality. Consciousness is the only reality.

Stick to reality by mentally dropping the unreality.

Remember:~

The duality is present as reality till ignorance is present. Ignorance vanishes the Soul, the Self remains in its own awareness. 

From the standpoint of the Soul, the Self, there is no second thing exists other than the Soul, which is present in the form of the Spirit. 

Thus, the Spirit alone is. And everything is Spirit.   The unreal(universe)  is created out of the real(Soul or Spirit).

If one does not find the reflection of the Self when he is standing in front of the mirror, but he finds his body and the background world in the mirror.  

The one which is conscious of the body and the experience of the world is not the body, but the consciousness, which is the Soul, the Self.

The relationship and love, hate happiness and misery of the practical life within the practical world are not connected to the Soul, the real Self. The Soul, the  Self is beyond form, time and space and beyond the birth, the life, the death, and the world. 

Thus,  rest in consciousness by recognizing it as the Self, which is God.  And realize the practical life within the practical world is a mere illusion created out of consciousness. Consciousness is the ultimate truth or Brahman or God in truth.

Getting rid of the physical shackle is necessary to overcome the burden and bondage of the illusory samsara. 

Love and relationship seem a reality in practical life within the practical world, but they are merely an illusion from the ultimate standpoint.   Thus, the game of life is merely a passing show.

Upanishads clearly declare:~

Katha Upanishad 1:2:23;~ The Soul cannot be realized through hearing a scholarly explanation of the discourses, not even by the intellect.

Katha Upanishad 1:3: 6: ~  “Through the knowledge of the Soul, God, one is pure and clean constantly.” Neither by reading the book nor by taking a bath at a holy place has one become pure. Inner purity is possible when one remains in constant touch with the Soul. Constant Soul-Consciousness is real purity.

Kena Upanishad 2: 4: ~  When it is known through every state of cognition, it is rightly known, for (by such knowledge) one attains life eternal. Through one's own self one gains power and through wisdom, one gains immortality.

Kena Upanishad 2: 5: ~  If here one knows it, then there is the truth, and if here one knows it not, there is a great loss. Hence, seeing the Real in all beings, wise men become immortal on departing from this world.

Mundaka Upanishad 1:2:8:~   “Remaining in the fold of ignorance and thinking “we are extremely wise and learned,” the fools with boastful nature ramble about like the blind led by the blind alone.”

Mundaka Upanishad 3:2: 3: ~  “The weak and timid cannot realize the Self. Self-Realization is not possible through intellect or hearing the spiritual discourse. One who welcomes God in every activity, through a thorough controlled and disciplined life, to him also the soul is revealed."

Mundaka Upanishad 3:2:3: ~   The Soul cannot be realized by the weak and timid.  

That is why  Sage Sankara says: ~VC - 56. Neither by Yoga, nor by Sankhya, nor by work, nor by learning, but by the realization of one's identity with Brahman is Liberation possible and by no other means.

58. Loud speech consisting of a shower of words, the skill in expounding the Scriptures, and likewise erudition - these merely bring on a little personal enjoyment to the scholar, but are no good for Liberation.

59. The study of the Scriptures is useless so long as the highest Truth is unknown, and it is equally useless when the highest Truth has already been known.

60. The Scriptures consisting of many words are a dense forest that merely causes the mind to ramble. Hence men of wisdom should earnestly set about knowing the true nature of the Self.

61. For one who has been bitten by the serpent of Ignorance, the only remedy is the knowledge of Brahman. Of what avail are the Vedas and (other) Scriptures, Mantras (sacred formulae), and medicines to such a one?

62. A disease does not leave off if one simply utter the name of the medicine, without taking it; (similarly) without direct realization one cannot be liberated by the mere utterance of the word Brahman.

63. Without causing the objective universe to vanish and without knowing the truth of the Self, how is one to achieve Liberation by the mere utterance of the word Brahman? — It would result merely in an effort of speech.

64. Without killing one’s enemies and possessing oneself of the splendor of the entire surrounding region, one cannot claim to be an emperor by merely saying, ‘I am an emperor’.

Until one knows the truth of his true existence, whatever he knows about God is merely a belief. Belief is individual, whereas the ultimate truth is universal every religion has its own idea of God thus there is no universality in the religions.:~Santthosh Kumaar