My favorite spiritual teacher is David R. Hawkins, MD, Ph.D. I believe that he’s the most spiritually advanced being on Earth.
Here is a recording of Oprah’s interview with him. It’s broken down into three parts.
If you would like to study Dr. Hawkins work, most people suggest you start with his book Power vs. Force. My suggestion for a starting point is his book Transcending the Levels of Consciousness.
You might like to check out his website.
May the bliss be with you.