I agree some daydreaming is fine and healthy, it is escapism and a natural coping mechinism in itself. I think that like all coping mechinisms, it can be overused and we can become too dependent on it.
Maybe I'm making too big a deal about it, it is good to be grounded in reality which I am trying to do.
I've always held the false belief that we are only products of our genes and our environment and it was basically imposible to change since all change came from stimuli from our environment. What I didnt realize was my ability to have a say over many aspects of who I am. My thinking can be changed if I work hard enough on it. Negative thoughts can seem like a tidal wave sometimes, and you cant fight a tidal wave.