While the expression "Illumination" has been up for a wide range of discussions, I can state that of the greater part of the ways I have contemplated in the course of the most recent decade, they all consistently concur that a move from the psyche/sense of self into Awareness is a vital advance on the way to Enlightenment.
Here's a multi-day practice that can move you into Awareness and help to free you from the jail that is conscience. As a rule, Awareness doesn't know about itself as the spectator. Rather, the lion's share of people is completely wrapped up in thought.
Spend the following 2 days in this way.
Know about something visual that eyes are seeing, and also something capable of being heard that ears are hearing, while at the same time thinking in the meantime.
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