Your work doesn’t take that long
You may learn that you don’t even really need an eight-hour workday. You can get your work done in six to six and a half hours. It’s just all the distractions at work that slow you down. The long lunches with coworkers. The memos flying around about remembering to refill the Brita filter or ink cartridge if you find them empty. The coworkers interrupting you to make funny comments.