Since I was a schoolkid,I've had them. I've learned to hate it. Not enjoyable.
I read that scientists can prove its just a mind and memory wiring gone a bit fritzed. Because..when they ask the people the NEXT DAY what the deja vu memory was? They can't remember!.
So,I take those feelings caused by..some trigger I still don't know what..as just bothersome. I gave up the multiple dimensions/previous life and reincarnation theory's.
Or,maybe I shouldn't?