Where wild minds come to rest
I was trying to think about when I started daydreaming, and like everyone, I did it a lot as a kid. Up until I was around 12-13, I used to sit in class and daydream because I was bored out of my mind, or on the playground because I didn't have many friends. I usually Mary-Sued myself in an existing world, I can divide my life into which world I was preoccupied with and living part-time in.
However, there were several times in my life when I didn't daydream. Between 14 and 18 years, I was really, really down. Usually depressed, I even had an eating disorder at some time. I didn't have access to DD, as if other things consumed my head, thoughts about sad things, or food.
Then I fell in love for the first time, and I could not stop thinking about that.
It seems weird but for all my life I have been really intense with my head, as if my entire intellectual life was just one long hyperfocus. Because when I DD, I'm pretty sure it is some form of hyperfocus. And when something strikes my fancy, I can also get into this sort of frenzy where I'll try to learn everything about it. Or read a 1000 pages book in mere days.