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Alice! There are two types of déjà vu. One in which you only have the feeling that this has happened before, the other one where you know it has happened before because you can remember your dream in which it had happened.

A similar situation is provided by precognition, by premonition. You have those feelings because you can recall the dream subconsciously. This means you can’t recall the actual dream but only the content of your dream.

Dreams, all dreams, are about the future but only few people can see this. However when it comes to déjà vus it becomes clear to those that have remembered the dream that went before it that dreams can actually see the future. Because they can see it only in déjà vus they think only some dreams come true. But those who have learnt the language of dreams know that all dreams come true.

Dream recall is a separate issue. Some people can recall easily, others can’t. This has to do with their brain functions. If their dreaming parts of the brain are well ‘wired’ to the memory bank they can recall the source of their déjà vus easily.

If you train yourself to recall your dreams you have a chance to recall the sources of the déjà vus eventually. The best thing to do is to keep a dream diary and pen with a pencil light next to your bed. Do not write down the whole dream story in the middle of the night, only make key word notes. In the morning these keywords will prompt the memory and you can then write the full story. If you keep doing this the brain will start rewiring itself, making new connection between the dreaming parts and the memory.

Another hint: before going to sleep meditate on your dreaming brain, talk to it. You will be surprised at the results!

Well, you'll have to be rather open to accept this, but I hear déjà vu relates firmly to precognitive dreams (in a nutshell: you predict the future), so it could just be the event predicted in the dream occurring in front of you, somehow helping you remember the dream.

your dreams and de ja vu is the same thing maybe things you see in the de ja vu is the same thing that happened in your dream you just dont remember thats why your deja vu can be awkard

maybe its because of your subconscience.