His life
As we said, John would work all of the time. He enjoyed it, although it could be stressful, he would push through and get what he had to get done right on time. The only downside to all of this was that every other part of his life was basically empty.
He spent every waking moment focused on work, he barely had time to make any friends or enjoy life in general. He was young and full of ambition, but he still had not learned the valuable lesson of balance in life. Without balance, everything is at risk of falling apart in a terrible way.