Watching the flow or flow? I had this moment , when I was engaged in conversation of topic with my friend, which we both reveled. I enjoyed the talk and we discussed without inhibition as it was natural. My question is whether I should flow with the events in my natural state of mind/body or just watch the flow of events without engaging fully (because doing and watching are two separate activities,and I can't be doing both at the same time without loss of concentration). When I watch, this creates duality, am I the doer or watching the doer, who is also me. Who is real me?
My opinion, that feeling of "I, me, mine, or even you etc" is part of high fetters (Sanyojana).  specifically, Māna which English translation is related to conceit.   This fetter is for people with high paying grade (none-returner) to deal with.  As for myself, low fetters, especially the 5 sensual pleasures are handful to resolve already.  But many have the ability and strength to deal with all 10 fetters simultaneously, and they have been successful too.  My observation, Buddha gave many target specific suttas regarding lower fetters and what to deal with them (perhaps in 100+ suttas), but he gave very general instruction on higher fetters. Basically to see them as 3 marks for existence (subject to destruction, changing, and none-self).