First, by making me absolutely dependent upon other people, it's shown me that we're all absolutely dependent upon God. That's an idea that I've always given lip service to, but never really believed.
It's also taught me that eternity is closer than we think . There are several times when I've come close to dying, and I've got to be ready for it at any time. Again, that's something I've always said I believed, but it's really been driven home the last couple of years.