One of the first jobs I ever had was a temp job inputting data from paper files into a digital system. It wasn’t the most stimulating job so I made a game out of how quickly I could input the data whilst getting no errors.
Being young and eager to please I also thought that completing the work quickly would please my superiors. So I rattled through the files as quick as I could, finishing the work a couple of days early.
It turns out my superiors were pleased but not for the reason I wanted. The work was completed early so there was no longer anything for us to do. They let us all go early without pay. My haste to do an efficient job had cost me a few days of work.