Just write down whatever you remember about your dreams, no matter how illogical or unimportant it might feel. If you only remember little parts of the dream, then write them down. It doesn't matter if you don't remember that in what order things happened.

The point of keeping a dream journal is that it helps you develop your dream recall. Now you might only be able to remember small parts of the dreams, soon you will most likely be able to remember your dreams more logically. It just takes some time sometimes.

Originally posted by Pannhidh
But I experience dreaming ( not long dreams, only short episodes like grabbing something or saying something ) the moment I first loose consciousness at night. Those episodes make absolutely no sense at all, but seem very important at the time.
The second I become aware of that it is only a dream, it disappears and I forget about what I was doing.
That might as well be hypnagogic imagery that appears when you fall asleep. Usually you're just so fallen asleep that you don't remember experiencing those, but sometimes you might be that conscious that you remember. And they disappear if you become conscious because it's not really dream yet.

That's what I think, but I might be wrong as well.