Depending on your perspective, the philosopher Immanuel Kant was either the most boring person who ever lived or a productivity hacker’s wet dream. For forty years he woke up every morning at five o’clock and wrote for exactly three hours. He would then lecture at the same university for exactly four hours, and then eat lunch at the same restaurant every day. Then, in the afternoon, he would go on an extended walk through the same park, on the same route, leaving and returning home at the exact same time. He did this for forty years. Every. Single. Day.
