It's the recognition that other people's problems, their pain and frustrations, are every bit as real as our own - often far worse. In recognizing this fact and trying to offer some assistance, we open our hearts and greatly enhance our sense of gratitude.
Richard Carlson (1998). “Don't Sweat the Small Stuff, and It's All Small Stuff: Simple Ways to Keep the Little Things from Taking Over Your Life”, MacMillan Publishing Company