CREATIVITY OFTEN HAPPENS IN THE MOMENT
When I was in college, I was asked (forced really) to keep a sketchbook for drawing and class notes. I was used to writing down reams in high school so it wasn't a wholly unnatural thing for me. I immediately became attached to my 11x14 black bound sketchbook. I'd be walking to class through the many park squares of Savannah when inspiration would strike like a lightning bolt. I would sit on a bench, under a tree, on the curb and free write ideas, inspirations, political and personal viewpoints, and much more. I'd collect and paste tidbits I would find: flyers, leaves, feathers, leaflets, notes, class syllabi, etc. I busted the binding out at least three times, taping it back together with gaffers tape from the photography studio. I filled it up and moved on to the next one.
My thoughts, ideas, life stories went into it and it became my greatest resource as a young (and current) artist. Whenever I hit a blank wall or a dry spell, I'd pull out an old sketchbook and read through abandoned and forgotten ideas. Itusually wasn't long before I was off and running on a new (old) project.
KEEP YOUR EYES OPEN
I'm a photographer. I'm not a draftsman or a painter. I'm not great at drawing, but drawing out compositions, sketching out images from life, kept my mind running, gears churning and taught me to keep my eyes open and to SEE what I was looking at.
You can write down ideas as you form. You can write down thoughts on your process before you create. You can write your thoughts on your process and conceptual ideas after you're done, when it is fresh in your mind. Deepen your ideas.
So get a book. Write. Draw. Scribble. Doodle. Paste. Break the bindings. Then do it all over again until its full of your ideas, concepts, creativity, and life. Then get another one and start again.