Primary texts:

The Perfume of Silence, by Francis Lucille.

Truth, Love, Beauty, by Francis Lucille.

Eternity Now, by Francis Lucille.

Transmission of the Flame, by Jean Klein.

I Am, by Jean Klein.

The Ease of Being, by Jean Klein.

Let the Moon Be Free, by Eric Baret.

The Nature of Consciousness, by Rupert Spira.

Talks With Sri Ramana Maharshi, by Sri Ramana Maharshi

Forty Verses on Reality, by Sri Ramana Maharshi

Ātmānandōpanishad (Ātma-darshan and Ātma-nirvriti, by Krishna Menon (Shrī Ātmānanda)

All Else is Bondage, by Wei Wu Wei:

Awareness: The Perils and Opportunities of Reality, by Anthony DeMello.

I am That, by Nisargadatta Maharaj.

More texts:

The Socrates Express: In search of life lessons from dead philosophers, by Eric Weiner.

Into the Magic Shop: A Neurosurgeon's Quest to Discover the Mysteries of the Brain and the Secrets of the Heart, by James R. Doty, MD.

The Courage to be Disliked, by Ichiro Kishimi and Fumitake Koga.

Thinking, Fast and Slow, by Daniel Kahneman, PhD

Give and Take: A Revolutionary Approach to Success, by Adam Grant.  

On kindness, by Adam Phillips and Barbara Taylor.

Mind: A Journey to the Heart of Being Human, by Dan Siegel.

The Untethered Soul, by Michael Singer.

Poetic:

Any poetry by Jelaluddin Rumi.

Poetry by Hafiz

Poetry by Pablo Neruda

Meister Eckhart’s writings

Gospel of Thomas

The Bhagavad Gita

Podcasts:

Ram Dass Here and Now

Rupert Spira Podcast

Wisdom of the Masters with Samaneri Jayasara

Pilgrim Heart with Krishna Das