BRAIN POWER: We've heard time and time again that we need to tap into our creative right brains. But how? Expert and author Martha Beck offers a great exercise to get you started: Sign your name. Done? Now, do this: Sign again, but this time do it in mirror writing -- right to left, rather than left to right (just moving your hand backward fires the right brain hemisphere, Beck emphasizes. Got that? Now sign upside down. Then backward and upside down. Repeat this until you can sign in all directions. Best of luck.