It's not unusual for writers to look backward. Because that's your pool of resources. If you were to write something now, I bet there's a pretty good chance you'd call on your teenage years, your experiences then, stuff you learned then.
Paul McCartneyThere's nothing like the eureka moment of knocking off a song that didn't exist before - I won't compare it to sex, but it lasts longer.
Paul McCartneyI think I always had a musicality, and I think I could tell a good song from a bad song. And I would appreciate hearing something that was new to me.
Paul McCartneyYou see, my mother was a district nurse until she died when I was 14, and we used to move from time to time because of her work.
Paul McCartney