Stoics believe that external forces can have a sustained impact on our soul. Our minds are powerful and we have the ability to get that snap judgment or response under control. We live less well when we are controlled by the chaos that uncontrolled emotions create. Change is part of nature and like people say if you don't like the weather Wait an hour and it will change The cycle of good and bad things Happening right now are the same as they were in history. If things are ever changing then we should take this into consideration when Contemplating how we will react to them.