If you have a dream about being lucid, it depends on if you are really knowing you are dreaming, are you controlling it in your dream, I mean are YOU or is your dream body controlling it? I guess what I would have to tell you is, when you are lucid, you will not have to ask any one if you are lucid, for YOU and only you will be the only one who truly knows, and you WILL know. There will be know doubts if you are really lucid, when you really are. OK I am being redundant.