Ramana MaharshiWhatever thing [in body and mind] acts in whatever way, remain aloof from those activities [that is, from the notion that it is ‘I’ who acts] and simply be a witness to them.

Ramana Maharshi

Ātma Bodha
Self-Knowledge, by Śaṅkarāchārya

Reference Materials:

Video/Audio Lectures

Swami Paramarthananda
32 classes (~30 mins each) 1 | 2

Swami Anubhavananda
6 classes (~75 mins each)

Atmabodha of Shankaracharya 2 of 6 @ Coimbatore 2016 (English)20161211 070552 NR YT

Swami Shantananda
15 classes (~60 mins each)

Swami Sarveshananda
17 classes (~60 - 90 mins each)

Swami Ishwarananda
5 classes (~65 mins each)

Atma Bodha - Part 2

Swami Tattvavidananda
7 classes (search for "Atmabodha" on the linked page)