Practice makes perfect, and more practice makes more perfect. Keeping a journal can allow anyone to become an author, through just a few sessions or better yet, an established pattern, anyone can begin writing and see improvement over time. A writer needs the constant removal of words from one's brain, and keeping a journal can function as just that.
Journals can be used for:
My notebooks are often handmade, smell like leather and book and inspire a feeling of creativity when I run my fingers across the embossed surface. I also only ever use a single style of pen with my journaling.
Journals can be in many forms; loose sheets on notebook paper, an ongoing word processing document, stickies notes scattered on a cork board, or a high quality notebook. Whatever inspires the author should be embraced. A journal can also be a place to express the visual creativity or brainstorming an author needs. Plot diagrams, family trees, floor plans, or even photographs taped in can help inspire and trigger more writing.
To get you started with your journal, I've provided some of my favorite places to gather inspiration. Take a peak at one or more and grab something to write with.
Also, if you've got an epic looking journal, share that too! Who knows, you may inspire others to get creative with theirs.