There are many characteristics that can reflect the characteristics of characters, such as impatience and anger, and temperance. You can know at a glance the distinctive characteristics of personality, and some lead to a sudden increase in your pressure. If the character's behavior doesn't match your personality, you won't be impatient when you are impatient, and you won't be restrained when you are temperate, then the pressure will definitely come up.
Stress is related to our mental state in real life, and it is the same in games. And the pressure is always divided into three levels, and it is only a matter of time before it is upgraded every 100. Stress will really damage the character's fertility and health, and eventually lead to mental breakdown and death.
Crusader king I