At Thanksgiving, if you are like millions of Americans, you'll sit down to feast with friends and family and talk about how thankful you are for all you have. But are you really grateful - that is, filled with gratitude?

Gratitude is like motion; it's relative. It's difficult to gain true perspective on what you have without a keen awareness that someone else does not have it. This awareness, cultivated with what I call a Gratitude List, offers rare lessons of humility and understanding.

Tomorrow morning, before you venture into the day, start creating a Gratitude List. Begin with the things that are easily taken for granted: I can walk. I can talk. I can see. I can read. I have enough to eat. Add your many true blessings to your list daily.

How many things can you find to be grateful for? And, how do the lessons of humility and understanding gained from experiencing true gratitude affect how you lead others?