Passion.

What does your passion look like?
What really turns you on?

If you don't know, this is a great thing to journal about.
Tear out some images, glue them down.  Add some colors.
There, now you're loosened up, so now you can write some words.
Quick.
Don't think too much about it.
What did you find out?

I think one of the most powerful tools we have as visual journalers is that when we play around with color and shape and image, our right creative brains are loosened.
We can experiment and mess around, and thus access the more sub-conscious part of our mind.  And this is the part where the secrets of the Universe are.  (Just ask Rumi.)

I see so many journaling "lessons" which show exactly how to make an art journal page; videos where the artist goes through a lesson of paint, color, stencil, whatever, expecting you to follow along and learn that technique.
This is art.
It's not art journaling.
Someone said "creativity is allowing yourself to make mistakes, art is knowing which ones to keep."

If you are trying to make pretty pages to share on a blog or facebook, what will you find out?
Don't get me wrong, sometimes it's pleasing to make a page you like, a page that looks finished and even frame-able.
But if you let that become your goal, you'll be missing out on the true discovery of your own inner mind.

Try to let your mistakes lead you somewhere.
Let your playing in your art journal ask the questions, don't work to force the answers.

All this is hard to put into words, but if you mess around, I think you'll know what I am talking about.
Just start with something that catches your attention, play with that idea or image or feeling.  Tear a picture out of a magazine that attracts you.

See what happens.

 
The artist is a receptacle for emotions that come from all over the place: from the sky, from the earth, from a scrap of paper, from a passing shape, from a spider's web.

--Pablo Picasso