Jansenism is an idea about how to live your life that comes from a man named Cornelis Jansen. He believed that people should try to understand what God wants us to do, even though it can be difficult to understand. He said that people should always think hard about their actions and try to be kind and honest in what they do. Jansenism says that people should try to be humble and honest and obey God, and that God's work should come before our own.