I've never been able to daydream or create worlds in my minds eye such that I get lost in them (which is something I hear people who daydream are able to do).
I think part of this is why I've always found creative writing to be difficult. For example in grade school I was certain I was among the few that read the most, yet for in class creative writing assignments I am often among the last to finish. I've always had the suspicion I'm not as creative as others for this reason.
That said I do believe that I'm very analytical, and so I found no untoward difficulty in persuasive essays, technical write-ups, etc.