I do not know that there is anything like a Purushottama consciousness which the human being can attain or realise for himself; for, in the Gita, the Purushottama is the Supreme Lord, the Supreme Being who is beyond the Immutable and the Mutable and contains both the One and the Many. Man, says the Gita, can attain the Brahmic consciousness, realise himself as an eternal portion of the Purushottama and live in the Purushottama. The Purushottama consciousness is the consciousness of the Supreme Being and man by loss of ego and realisation of his true essence can live in it.
WritingThe Delight of Krishna
Living in the Consciousness of the Supreme Being
Sri Aurobindo