yes there are, basically it is to ask yourself about every hour or so if you are actually dreaming. Then it becomes second nature and you do it in your dreams.
Trust me, that is the way it works, Iv had tons of these. Im not a pro, I cant get them to happen when I want them do. Probably because I dont want them too, I enjoy spontenaity.
I read a book on lucid dreaming once, INCREADIBLY REPETATIVE
