Further reading

Ramana Maharshi
Who Am I?
Self Enquiry
https://realization.org/p/ramana/ramana.html
Suzanne Segal
Collision with the Infinite: A Life Beyond the Personal Self.
https://www.amazon.com/Collision-Infinite-Life-Beyond-Personal/dp/8178221136?tag=realizatorg
Nisargadatta Maharaj
I Am That
The Nectar of Immortality
https://www.stillnessspeaks.com/teacher/nisargadatta-maharaj/
Swami Sarvapriyananda
Vedanta Society of New York
Rupert Spira
Being Aware of Being Aware
The Intimacy of All Experience
https://non-duality.rupertspira.com
Andrew Harvey
The Direct Path
Bernadette Roberts
No-Self
https://realization.org/p/bernadette-roberts/bodian.roberts-interview.html
Maury Lee
Enlightenment for No-one
Shaykh Fadhlalla Haeri
Elements of Sufism
https://www.shaykhfadhlallahaeri.com
Amir Freimann
Spiritual Transmission: Paradoxes and Dilemmas on the Spiritual Path
https://www.amazon.com/Spiritual-Transmission-Paradoxes-Dilemmas-Path/dp/1939681952
Adyashanti
The Way of Liberation
Mariana Caplan
Eyes Wide Open
The Guru Question
Half Way Up the Mountain
The Guru Papers
Marlowe Sand
Paradise and Promises: Chronicles of My Life with a Self-Declared, Modern-Day Buddha
The Headless Way/ Douglas Harding
Richard Lang
https://www.youtube.com/watch?v=vzXn8tDaSA8
A.H.Almaas
The Diamond Approach
Meister Eckhart
The Complete Mystical Works
G Bluestone
Maverick Sutras
Life in the Rolling Mirror
Irina Tweedie
Daughter of Fire