"SEPARATING" in dreams,what is going on?

so in many of my recent dreams,i get to a crucial point in the dream,and then a separating happens.

i suddenly become the observer,AND the character i was before the separation.
often it's at that point i become lucid..
the rest of the dream consists of my viewpoint switching between both views..or simply observing myself during the dream from a distance,and sometimes as the two characters interacting with each other.

can anyone give me a clue as to what this is all about?

i have an idea but i'm interested in your views..