Whoa; I hope I don't pursue what I dream in the night!
I am one of those who has 80+% nightmares and I would be on death row somewhere if I followed my dreams.
More seriously it sounds yo me like you are saying that we want to follow our dreams and fulfill our desires. When we can't do that we can always fantasies about it and relieve our burdens of daily life.
In either case the amount of reality involved it slight.