I wrote poetry, journals, and, especially, plays for the neighborhood kids to perform. I had an ordinary, happy childhood. Nothing much was going on, but I had fun.
Each of my books took roughly one and a half years to write. Some may have taken a shorter time to write the draft and a longer time to revise, while others were the opposite.
I was painfully shy, and I had tremendous difficulty making friends. So, lacking friends, I watched other people. Watching is something all writers must do, and it was in junior high that I learned to do it.