Today's idiom is "go the extra mile".
This means to do something extra; do more than what is expected.
Example 1
Janet is a great teacher! She goes the extra mile by helping students after school.
Example 2
If you want your boss to notice you, go the extra mile . Work late, take on extra responsibilities and improve company systems.
https://idioms.thefreedictionary.com/go+the+extra+mile