Why is my mind that much ugly? Since i was born..

I think that I have something dark and perverse in me, when I can imagine and feel such sensations without feeling disgust and panic...

Was I a bad person before this life and is God punishing me. Sometimes I think I have a reverse punishment. Like God knew I'd be a horrible adult so that's why I was abused as a kid. I wasn't horribly abused but I didn't really realize I was until my psychiatrist told me I was. I hate myself

My real-events are terrible. I'm plagued daily by multiple awful things I did as a child / teenager (please don't downplay it.) I've grown into a better person, but the memories won't let me see any progress. It feels as if my insides are dying from grief and shame. How do you go day to day not picturing yourself as a monster?