It's hard to say. The human mind is a vastly complex and wonderful place. It can come up with all sorts of things, but I can't say if any greatly detailed daydreams (or dreams in general) can come true or not.
It's also possible that you're influenced subconsciously by things and that dictates the daydreams. Or the daydreams could influence you to seek them out, making a sort of self-fulfilling prophecy.
You'll have to let us know!!!!!
Solid input here!! That last statement applied to the both times a reoccurring premonition happened to me. Granted, I think I was being proactive about my situation which kinda lead to that self-fulfilling prophecy Horizon mentioned.
Definitely keep us posted!!