A simple example from every day life is to examine the dynamics of getting a set of open tasks done by a specific deadline. Creating a causal loop diagram of a given system is conceptually quite simple, even though it mostly leads to very animated discussions in practice: you start with the parts of the system you already know and just keep asking “what influences this part” until you reach parts that are at the systems boundary or parts that will not change over time. Then you go in the other direction and keep asking “What other parts does this part influence”. If that part is already there, you connect them. Otherwise, you create a new part.