Thanks for looking.
Could you please go back and read your last answer. Reading it, one thing I notice is that there's a lack of clarity; you're experiencing thoughts, and they talk about an "I", which seems to be "you", but you aren't sure.
What's great is that if you pay attention, you can experience things with more clarity. Unlike a ticket to a movie or the theater, it won't even cost you anything.
Basic questions:
1) What percentage - roughly - of the thoughts are related to "I", "my", "me", doing things, wanting things, comparing yourself against others, etc? And how many of the thoughts are impersonal or about other things - as in "wow, that's a blue sky!" or "strange noise"? That is, are your thoughts 50% personal, 80% personal, 10% personal? Please look and form a rough estimate.
Why is that important? As you mentioned
they seem to be a stream of non -sense. Random, completely random at times.
-- so it is like you're locked in a room with a boring madman. Let's see if he's talking about things that don't matter that much (hobbits, sports and the weather) or things that do (you, your future, your appearance, your character, etc).
2) What does the "I" in the thoughts refer to? As you wrote,
However, that idea of thoughts and listening to them, who is doing the listening ..... I'm not sure it is the "I" referred to in the thoughts .... but no closer to giving a definitive answer here - I don't think there is one.
Please try to check the following - please check that "my nose" refers to a particular part of your body. Please verify that even though your nose seems to have changed since you were a kid, you've been calling it "my nose" all this time. At noon, if we ask you to point to "my nose" you'd point to the same spot as you would at 9AM, 9PM, etc. I would guess it has been the same since you figured out "my nose" when you were a kid.
After you do that, let's take a fresh look at this "I" that keeps popping up in the thoughts.
So let's see what the thoughts say this "I" needs to do at the moment of waking.
Take a few moments - a minute or so - when you wake up in the morning to stay in bed and notice what you're thinking before you get out of bed. My guess is that you'll have a bunch of thoughts related to the "I" needing to get out of bed and do things. Or, if you're unemployed and depressed you might have a bunch of thoughts like, "my life sucks and I just want to go back to sleep." If you're caffeine addicted, it might be, "I need to get up and make the coffee."
I don't know what sort of thoughts you'll have in the morning; let's see what the thoughts say about the "I" and what ought to be done upon waking up.
You might need to change your bedtime routine a bit so that when you wake up the next day, you remember to do this exercise before you launch yourself into your day -- eg tie an arm to the bed with a string so that you notice it upon waking.
So let's try to nail it down with a situation that repeats - waking up after sleep - and see what happens in the first few moments of the day.