One of the best ways to do this, I believe, is teaching my kids about other cultures and those who are less fortunate. When we learn about other people and pray for them, I believe it helps us be less focused on "self." I wrote a post called Thinking Outside the Box that talks about a couple of books we have used. Another book we have started using is Window to the World--excellent resource to teach about countries and encourage areas to pray for. It was the winner of the Gold Medallion in 2002 for Elementary Age children.
Another way to build empathy and awareness for other cultures and peoples is through mission trips. If you ever have a chance to go or take your family--do it! This could even be helping with a Habitat for Humanity house or traveling to help hurricane victims for the weekend. It is wonderful to go on trips oversees, but there are needs all around us.
Below are some pictures of a mission trip my husband took to Kenya last year. A picture truly is worth a thousand words! Hope it inspires you to "think outside your box."