Is it normal that i daydream excessively and talk to myself while doing so?

Ever since I was a child, I have been prone to fantasizing and behaving in a generally Walter Mitty fashion while doing so. I have a bizarre compulsion to engage in elaborate and often stimulating fantasies involving a number of strange concepts and I sometimes talk to the individuals in these fantasies. Because of this, I have had very few friends throughout my life, and have often found myself preferring my fantasies to socializing or engaging in real world activities. Though I sometimes make plans to do things in the real world, I inevitably end up fantasizing as opposed to doing anything constructive.