Some say that all is One already, All is Divine, so no need to give anything up, no need to do anything. Whilst there is a truth in this, and whilst this type of teaching can provide us some limited time-bound relief (which is good as a start), it is almost always an ego-preservation strategy: the thinking mischief-causing mind is allowed to continue with its ideas and concepts and beliefs about ‘this’, and the genuine thought-free Blissful Realisation of That Which Always Is, is postponed yet again. Suffering and duality continue, apparently, and we remain stuck in illusion, apparently.
Why ‘apparently’? Because in Reality there was never any ignorance, any delusion, any duality or any suffering. Only Blissful Being ever really is.
‘This’ never was (referring to objective phenomena/maya).
There is only That (Divine Formless Spirit)… …and That Thou Art.
To realise this is very simple: (1) Surrender all to the Him (or Her or It), (2) allow the mind to become first happy, then very calm and still, and then (3) enquire into yourself as per instructions of Bhagavan Guru Sri Ramana Maharshi
Bhagavan Ramana summarises the teachings using the Biblical phrase ‘Be Still and Know I Am God’