Going the extra mile means...

...doing simple things to brighten someone else's day
...being courteous and always saying thank you
...praying for the needs of others, not just yours.
...waking up early to meet others' needs when you could have slept in.
...being willing and able when meeting other's needs.
...doing what you can, it being within your abilities.
...being available after u've settled your responsibilities.

Going the extra mile does NOT mean...

...helping others by exhausting your own health
...doing things just because you have to, or becos you were told to.
...putting urgent events above the original priorities which hold greater importance.
...testing how much you can be stretched and pushed. ( i believe in the theory of being stretched, but it cannot be an excuse just to accomplish tasks)