Most people do what is asked. They show up, finish the task, and go home. There is nothing wrong with that. It is just not how anything remarkable gets built.
The second mile is where your name gets made. The first mile is obligation. The second is identity. Anyone can do the work while someone is counting. The people who rise keep walking after the count stops.
Here is what nobody mentions: the second mile is never crowded. The competition you worry about quit at the first finish line. Out there it is just you, the work, and the person you are becoming.
So stay a little longer. Read one more page. Make one more call. Give the client something they did not ask for. Not because anyone is watching. Because you are.
The extra mile is not extra. It is the whole road to the life most people only talk about.
Walk it.