What if

I've been trying to lucid dreaming recently but didn't success, yet. I think it's because part of me are excited if I can control my dream, but the other part aren't agree. Dreams are should be vivid like it suppose to be. That's the beauty of it. When it really apart from reality, from my consciousness.
And there's this little silly thought of mine, what if someone's dream is too lucid they can't actually pile it from reality. like, both of worlds are real because we are 'awake' in it.
It will be scary.