I am a daydreamer, and has always been that. My mind wanders a lot. But I have decided to view it to mean that I have a creative mind! Anyhow, I dont see it as interfering with my life, it is just something I sometimes do when I have the free time.
"Modern psychology has found that when your mind wanders, it's a sign of the creative process, which means you're actually giving your mind a workout. By having multiple simultaneous thoughts, your brain is strengthening your mental work space — the more mental workspace you have, the stronger your ability to mentally juggle more than one task."
"Wandering mind correlates with higher degrees of what is referred to as working memory. Cognitive scientists define this type of memory as the brain's ability to retain and recall information in the face of distractions," (according to a study by researchers from the University of Wisconsin and the Max Planck Institute for Human Cognitive and Brain Science.)
Well, that doesnt sound to bad to me! But of course, if it is causing a problem in terms of getting things done (chores, errrands, studying, getting to work late, socializing etc ) I guess you have to view it as a serious problem. I have also heard that people who have gone through a traumatic event choose to daydream/ create a unreal world just to escape thinking about the trauma. And then that is not healthy I guess.
I was for a period in my life living in a very unhappy situation, with very little money, a really bad job, and I also was in a very unhealthy relationship. I remember I daydreamed a lot then, and made up a happier place for myself in my mind. In the long run it only held me back from taking steps to change my situation. So I guess it can be both good and bad. I tend to think that if something is not harmful to myself or to anyone else, then why not indulge in what makes you happy!