Lord Guruji Ramakrishnan known among devotees as Atma- Guru, is a Hindu guru and a veteran in Kerala Tantra Shastra is the Peedathipathi of Guru Parasurama Peedam which has Kshetrams and Ashrams in South India.

Be aware of Atman always. It is continuous and everywhere the same. You say " I am he who meditates", and "The supreme one is the object of meditation". Why do you thus divide the indivisible? - Lord Dattatreya

Atma / Atman is the essence present inside all living natures which is considered as eternal, imperishable, beyond time, unchanging and also unaffected by personality and unaffected by ego. Atma is that in which everything exists, which is of the highest value, which permeates everything, which is the essence of all, bliss and beyond description. Atma, when it is present in the supreme self is called paramatma, when present in the ultimate reality is called Bhramam, and when it is present in the Individual self ( Living things ), it is called Jeevatma.