Set out on a path of a ghost-hunting renovator. Your task - restore haunted houses to a usable state!
Chase away ghosts by any means possible. Sometimes your job will be as easy as banishing an entity with holy water and sometimes you will need to draw elaborate magic circles and perform sinister rituals. And if nothing works, you can always look for an alternative way to solve your issue - like hiding a door to a haunted cellar behind some heavy furniture.
Change wallpapers, paint the walls, and replace furniture. Find a passion for interior decorations as you do what you can to keep a house from looking haunted - even if it is.