Ever heard a customer say they were home bound because the weather was so bad, but then complain that the mail had not been delivered yet?
They take for granted that "nothing will stop you from your appointed rounds."
That's a good image to have. As you work to live up to it, make yourself #1 though. Take the time, watch the step, be careful. A little late is better than not at all.
And when you are back home and comfortable by the fire, remember there is a whole host of people who are grateful, even if you don't always hear it.