When I was a Christian Monk, it took me some time to "find" the simplicity of the Christ's teachings. There were so many concepts to learn, so much "stuff" to fill the mind. It took what appeared to be a very "long time" to get it all down, and organized.
Realization will not fit your concept of it. If you can fit your realization into your concept, your "realization" is in the mind only.
"Enlightenment". "Enlightenment" means silence to the mind. "Enlightenment" ends the "control" of the mind. If we have filled our minds with a large education, this is an "investment" we have made. This is something to protect. So even if we know that "Enlightenment" is not available to the mind, we still pursue it with the mind, and judge others, even "Gurus", with the mind. This is why so many are "skeptical" of every Guru, every teacher that they can "outsmart", or challenge with their superior education. The wisest teachers in spirituality are the ones who are mostly silent. Ramana was one such. He talked only out of compassion. And this is key. Gurus are often questioned as to why they teach. And of course, the answer is compassion. Just as those who search for "Awareness" or "Enlightenment" are driven by an unexplainable compulsion, the Guru is compelled to teach. I am not talking here of those who see "Enlightenment" as an "achievement" to add to "their" education, or the guru who seeks an ego boost, a following or riches. I am talking about those who realize that "Enlightenment" brings nothing, and teaching is often thankless work, but who are compelled to search and to help.