Going that extra mile is a cliché that so many use as a term rather than giving the phrase the impact it deserves. It is a simple term, yet is very complex in it’s variety of meanings.

Going the extra mile is going above and beyond, having a desire to give more than is expected; reaching out and helping people, doing things without being asked or expected, caring enough to dig deeper within one’s self to do more, without self-grattitude or motives.
It is the willingness to go the extra mile for another person or people with a caring heart and loving attitude.

Always go that extra mile for yourself and for others, because the blessings and the joy that it brings, is worth every step of the way.

Matthew 5:41 NIV
If anyone forces you to go one mile, go with them two miles.