In the book, "The Art of the Start" by Guy Kawasaki, he encourages entrepreneurs to create a mantra instead of a mission statement when starting a business. He says that mission statements can often be mediocre and unoriginal. A mantra is a single phrase that defines a business, and can be used to guide your work. Some of the mantras that he uses as examples are Nike (Authentic athletic performance), IBM (Think.), and Disney (Fun family entertainment).
So, what guides your work? As you move forward towards your dreams, having a mantra might help you to filter out some of the stuff that just doesn't matter.
My mantra is "Encourage Growth. Inspire Creativity." What's yours?