What is it they are interested in? Do you mean a so called seeker who doesn't know about "Non-duality?"How would you describe this to somebody who is very interested, but has never heard about this illusion.
There was thinking about this question but no particular moment could be found which "did it."What was the last bit that pushed you over, made you look?
More of a rather slow deepening and seeing as fact that there is no I centre to be found who has command.
But that was nothing to do with it really. My mind could easily accept there is no I, but it was baffled by the "if not ME, then WHO?" conundrum, which probably stifles loads of us!
One of the first things I would try and get someone to see for themselves is that a WHO is not necessary for life to do it's thing. Seems obvious once you see it, but until then it's the last place you'd ever look!
The thought of an I which repeats is like being hypnotized into believing that this thought I really does command and represent what goes on as a human. It's also very important for them to see very quickly that there is no I making any choices. The seeing that this I is just a thought and that there doesn't have to be a WHO was a big thing. It always came back to the who bit. If it isn't ME, then WHO? Yet, Experiencing goes on. ;)
Very important to clearly see there is no person pulling the strings. It's a touchy area as we are ripping the very foundations from under the feet of those who come down this path! Although liberating, it's also potentially uncomfortable at first. But it could be no other way than what happens. The willingness to let go of all desire to control "my" life was also a factor. It was also very useful to employ directly looking, and paying attention, careful attention to all thoughts, feelings and patterns.
I guess In the end it was just noticing very carefully and seeing how things happened and noticing what thoughts were saying and doing and what was attached to them. Toying with the idea that no one was doing any of it is deffo the clincher for me i'd say. Now it's much more relaxed in this awareness. No pressure and no perceived stress at all.

