I can understand how your upbringing would impact that.

I think for me, when it comes to my "dark thoughts" during a depressive episode, they also revolve around my upbringing. It's not religious but it's like a music track stuck on 'replay'. Except, it's not music. It's all of the berating and psychological torment I was exposed to. Just keeps on playing over and over. I wish it was a tape instead of CD, then maybe my player would eat the tape and it'd finally stop playing.