I stopped journalling because I noticed I was interpolating the missing bits of my memory while writing down the dream. It became more like writing an imaginary story inspired from my dream, then recording my actual dream.
But that said, I definitely think this is good way to force myself out of the loop.
Very interesting ideas in this thread: 1. Remembering the dream you were just having re-induces sleep 2. Writing a dream journal first thing every morning as a means of warming up higher levels of cognition (to help break through the morning haze) 3. Given #1 and #2: if you stop journaling, you might end up with a habit that puts you back to sleep in the mornings.
Gradually dimming the bedroom light with a warm color temperature helps me get tired in the evening, and fading it in to a cold color temperature in the morning helps me wake up.