Yes thats the door to a lucid dream. Sometimes its so obvious that this can not be real that you realise it must be a dream. Sometimes this didnt happen.
Unfortuanetly i can not tell you why or how it is possible to get this kind of awareness in every dream. For me it happens or it doesnt.
RoD is helping to get a lucid dream and it was helping to get longer lasting lucid dreams.
One of my main problems in the beginning.
Wish you many lucid dreams in the near future 
, i really appreciate it