Mentally reduce the world in which you exist into waking experience and waking experience into mind and mind into consciousness by perfect understating of ‘what is what’.
When you realize’ what is what’ you will realize everything is consciousness. There is no second thing exists other than the consciousness. : ~ Santthosh Kumaar
Self-realization is an impossibility, without understanding ‘what is the mind?’ ‘What is the substance of the mind?’ and “What is the source of the mind?”. The mind and its substance and its source are one in essence. . That essence is the Soul, which is present in the form of consciousness. By realizing the consciousness alone, is real all else is mere an illusion created out of the consciousness.
The world in which we exist is created out of a single stuff. That single stuff is the consciousness. This knowledge of the single stuff is Self-knowledge or Brahma Gnana or Atma Gnana. Self-knowledge or Brahma Gnana or Atma Gnana leads one to self-awareness.
Trying to make the mind still is an impossibility without Advaitic wisdom. Thus, perfect understanding of ‘what is what' is needed to realize the truth beyond the form, time and the space.
The Soul is the innermost Self. The Soul is present in the form of the consciousness. The world in which we exist is created out of the consciousness. The consciousness alone is real the world in which we exist is mere an illusion created out of the consciousness.