You are expected to do your work. Hopefully, you will do it such that you are the best in the world at it and produce awesome results. However, it is your enthusiasm and positivity that would define if you football team would want to play with you.
As Sir Alex Ferguson puts it, two ways to judge a top player are ability(if he can kick the football) and then enthusiasm – does he have what it takes to keep at it..
A Learning a Day 