I had a scary three days once where I couldn't figure out if I was living to dream or dreaming to live; "the" dream continued each night where it left off, like a soap opera and I couldn't figure out if I was supposed to be there or here.

The best way I know to shake it is to realize that you are sleeping when you're sleeping :-) so even if it were "true" it can't be in your waking life because you are awake and using a whole different "system" of perception then, etc. Dreams are literally just dreams; even were we able to forecast the future (we can't) it hasn't happened yet and how it goes down won't ever be exactly as imagined (whether in a dream or by us/some "magic" future predictor person while we're awake).