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.
That is what I do too. For me, it is the best way to fall sleep right away.
I often wake up at night or early in the morning to go to bathroom, or take water. I found that the best way to go back to sleep after waking up is to think about the dream I just had. It seems like this 'forced' dream continuity is somehow sleep inducing.
What may be happening to you is the same thing: your firs instinct is trying to remember your dream, as you trained yourself through years of dream journaling. It's a learned behaviour. But what happens is, this induces sleep, and you're caught in the loop.
Maybe the trick is to go back to writing down your dreams when you wake up. This activity may keep you from falling back asleep.
Hope this helps.