Haunted
Part of speech: adjective
Definition: Of a location, frequented by a ghost or ghosts. Obsessed (by an idea, threat, etc). Showing a feeling of being disturbed.
Example sentence: I've got quite a vivid imagination and I'm easily overwhelmed by sensations and things that are beautiful or scary. I don't think I've ever seen a ghost - I think I'm probably haunted by my own ghosts than real ones.
Preoccupied
Part of speech: verb
Definition: To distract; to occupy or draw attention elsewhere.
Part of speech: adjective
Definition: Concerned with something else; distracted; giving one's attention elsewhere.
Example sentence: Many older people I know are focused on the past. When they talk about the future, they are, quite understandably, preoccupied with the hassles and obstacles of their increasing age.