It seems so difficult that it really should be too simple.
Ha Ha, yes. Fortunately, the difficulty is just part of the illusion.
what was entity that was believed to be “I”? Is it continuing thought?
There never was an I. When you were a child, did you believe in things that never existed---except as thoughts/desires/aversions? Did they seem real at the time? Were they ever real, or were they just thoughts?
who tries to understand all this?
Ha Ha again! This question contains the same assumption as the statement
“there is something that is watching”.
Let's say that every day while you were very little, your mom read you the story of the three little pigs. Except, your mom wanted to make the story more exciting, so she added dragons into the story.
Imagine you grew up believing that the story of the three little pigs has dragons in it. Then one day you have to do a book report on it, and you're like "I don't need to read this story, I already know it by heart." So you kind of half-skim through it, not noticing that dragons aren't mentioned anywhere. Your brain automatically fills in those parts.
You get an "F", and your teacher says "What in the world are you talking about? Read the book again."
This time you do, with full attention. Now you're not adding anything into it, you're just reading at the book exactly as it is. You notice there's nothing about dragons!
Now, the same exact thing is going on with the reality of thinking. Your brain has the
unconscious assumption that there's a self thinking thoughts and experiencing them.
But, if you read (look at) reality exactly as it is, plain, without adding anything in, you'll notice that no such thing is there - that thoughts are fully supported on their own, they don't lean on a self to function.
It's the same thing with perceptions. No "perceiver" needed at all. And none to be found.
+++
You hear a noise and there is the thought "that sound is in another room". But where exactly is the hearing occurring? Is hearing occurring in the other room? Or is it occurring in direct experience here and now? Does a hear-er get up and go into the other room to hear the noise?
Isn't the noise and the hearing of it happening simultaneously? Without separation? Can you identify, in your direct experience, where the noise ends and the hearing begins?
Isn't it truer that the noise and the hearing are the same experience, and that only thought and language separate them into noise and hearing?
Where does sound actually occur? In conscious awareness.
Listen and look for the dragon: Is there a “hearer” in addition to the occurrence of sound?
p.