Make a self-control roll any time you are called on to spend money. If the expenditure is large, this roll may be at -5 or worse (GM’s decision). If you fail, you refuse to spend the money.
You are deathly afraid of infection, or just of dirt and filth. Make a self-control roll when you must do something that might get you dirty. Roll at -5 to eat any unaccustomed food. You should act as “finicky” as possible.