Journaling about life is a great resource of relection and learning, and maintaining a separate book to document ideas is perfect for projects and business-building. I call this an idea book, which I carry with me everywhere I go.
My idea book is a Moleskin sketchbook our design department stamped with design related terms and gave away to incoming freshmen a few semesters ago — each faculty member got one as well.
An idea book is a great way to document your thought process when generating concepts for a new brand or expanding on an existing one, or just brainstorming and taking notes. My pages are filled with mind-maps and are stuffed with visuals that inspire me.
I always have so many ideas and it's hard for me to keep track of them, so it's great to go back to the idea book and reference old thoughts to inform new projects.
So what's your idea-keeping technique?