- High dose of DMT. It'll be the closest thing to death without actually dying. What you realize is, on the other side of that threshold, a core piece of you will persist. Death is an illusion, consciousness exists forever/outside of time.
- I think, to your point, all entheogens will help you (if you're ready for them), but a full fledged high blast of DMT, to quote Terrance McKenna, "is the farthest out one can go and still come back."