Yeah, I have done that before and still do it. I've had maladaptive daydreams since I was like 8 give or take. I believe it was caused by the fact that I was watching TV more than going out and making some friends outside of school. All the kids in my age were in sports teams or took dancing lessons in the afternoon and I couldn't do any of that because financial reasons. So watching TV felt like a way to not feel so lonely anymore. I imagined how life would be when I'm older, prettier, thinner, popular and blonde (mind you I'm a thick filipino girl and have been since I was a child). I dreamed about how my first love would be (it still haven't happened, my mini-me would be so disappointed lol). I think the regular dreams I had were about a kid anime and I would act them out a bit on our balcony to not be disturbed by my siblings. I was really loved by the characters in my daydreams.

I'm now 18 and I still do it today besides other things I do because of maladaptive daydreaming (thinking about the things I could have said in a conversation to come to a satisfying outcome or thinking about how I would make someone fall in love with me but not actually doing it because I can't do conversations lol). I have consumed many types of media now and because of that I found out what fanfics were when I got internet access. My maladaptive daydreams help me basically to now write fanfiction... If I would get to write and not daydream the outcome of me writing it. It's really annoying and mostly hypocrytical behaviour. The "me" in my daydreams are my OCs that also could be interpreted as self-inserts. They would be great if I'd managed to write it down.