The goal is not to have a perfect journal sitting on the counter gathering dust. To let your acrylic paints dry up in the containers. To have a neatly aligned set of markers. To have a picture perfect art studio with twinkly lights. I urge you to find 15 minutes each day to invest/gallavant/wander in your journal. You don't need antique sapphire ink + translucent origami stencils + vintage letterpress alphanumeric rivets. Or an instruction manual. The value in art journaling is actually opening up your journal* and getting down to work.
Here's the thing.
Once you make the potentially life altering decision to do some art... then go ahead and do some art.