The document discusses using a daily journal based on Stoic philosophy to build resilience. It recommends writing down the worst possible thing that could happen each day in the morning. Then checking it off as yes or no in the evening to see if it actually occurred. Over time, practicing this exercise conditions people to expect and be less anxious about negative outcomes that are outside their control. Two ancient Stoic examples are provided of philosophers who practiced similar exercises by voluntarily living with less possessions or expecting others to act poorly. The goal is to strengthen people against life's difficulties by mentally preparing for negative scenarios.