Ramana MaharshiThe lazy state of just being and shining [as ‘I am’] is the state of Self, and that is the highest state that one can become. Revere as most virtuous ones those who have attained that lazy state, which cannot be attained except by very great and rare tapas.

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)