I was 15 or so when I started to think I wasn't right in the head...but that's only when I first was able to look inside my head...I had always had problems and was first circumcised at birth without anesthesia, and I remember it and the pain, then I was left alone in my bedroom as an infant, then my mother proceeded on a program of slapping my face as soon as was old enough to start walking. The slapping continued until I was about old enough to complain, around the 2nd grade or so. So, I was set up to have problems, definitely. But age 15 was when I became depressed in earnest.