The fastest way to open up to creativity is to doodle. No matter if you are a painter, a musician or a banker when you doodle you activate the right side of the brain. It’s a great idea to doodle when you are not thinking about it, like when you are speaking on the phone or are at a cafe with friends. When you do something creative and let go of all of your thoughts you get into a flow state of mind which is a very good form of active meditation.
For more info see this article in the chicago tribune: The benefits of doodling. The Chicago Tribune.