Hey, take care and try to keep a cool head, like a spiritual teacher used to say.
It may help to research what enlightment is, because you seem to be describing a different experience.
Why would you even want to become enligthened, if you don't know what that is ? If you already know what it is, you are there right now as we speak and there is no need to do anything. Also, by wanting to become enligthened, that wanting makes the achievement impossible.
From your words, you have simply experienced a "high" feeling and developped attachment
to that feeling (and later this "Maum"):
"I will never, EVER forget it" (this is attachment)
There are many ways to get high, but that doesn't have a deep spiritual meaning.
That has caused you a lot of suffering, let me quote:
"It left me COMPLETELY devastated"
"doubts haunt me"
"I *KNEW* it was just my human egoic mind taking on these sorts of comments"
"I then spent every day following trying to figure out how to "get back there"."
By the way, there are no levels to enlightment, you either are or you aren't.
a spiritual death / killing of the ego is a path to realizing God.
Problem is that you are creating a (new) ego out of these ... things you're experiencing.
This is how suffering arises: you have an experience, you label it as good / pleasant /desireable, and that gives birth to desire / attachment / clinging.
If you want to be free, let go and move on.