This was a single repeated task with a high cost of failure. There was zero possibility of "gold plating". I was working at a speed I thought I could maintain

This was a single repeated task with a high cost of failure. There was zero possibility of "gold plating". I was working at a speed I thought I could maintain without killing someone. Telling me to think about a deadline would have simply added stress. I was plenty focused already. We finished the week's work more than a day faster than planned.