I find myself day dreaming quite frequently. I think it is just the indication of an active mind. I have attention deficit disorder so it isn’t that uncommon for my mind to wander. The key is that when I have to I can bring myself back to task and focus until I get it accomplished.

I think I would actually lose count if I tried to keep track of the number of times that I actually catch myself day dreaming through the day. I do feel it is harmless though and as long as you can recognize the line between reality and fantasy you are fine.