Who hasn't groaned over having too much to do? And while a to-do list is a great organizing tool for a lot of tasks, what I learned on my drop the ball journey is that what you do is far less important than the difference you make. Plus, to-do lists don't take into account the constraint of a 24-hour day. Here's a tip: Stop using a to-do list and start using your calendar as an organizing tool. It helps you to be successful in scheduling your day.