If in a dream you consider someone's passport, then you should be extremely careful not to get on the rod thrown with your competitor. If dreamed you that you cannot find the passport, then you should face a number of problems, however all of them will have temporality. The dream in which you live under someone else's passport, means that you are frightened by current situation in which you are forced to hide something even from relatives.
Be sure and keep any other thoughts out of your mind before drifting to sleep as a cluttered mind can decrease the chances that you will remember your dreams upon waking. Also, focusing on remembering your dreams upon waking in the morning is another very important thing. This sounds very easy, but is often hard for some to do. Interpret a dream by "dictionary dream of interpretation"
When you very first wake up, simply think about your dreams. Don't allow your mind to drift off to other things, just lay there and think about the things you dreamt about the night before - dictionary dream meaning.