What do Madonna, Martha Stewart, John Lennon, Ellen DeGeneres, Ben Franklin, Ronald Reagan, Leonardo da Vinci, Thomas Edison, and Johnny Cash have in common? Each is (or was) a list maker. These successful people, along with CEOs and successful entrepreneurs, all use lists to keep track of their ideas, thoughts, and tasks. Finding enough hours in the day to get everything accomplished and allow for some downtime can be a struggle. It's no wonder so...