Same.
I have childhood trauma. I'm definitely an underachiever - I've done well, I just know I could have done so much better, and it should have been a lot easier. Diagnosed Autistic in my 50's, and ADD (I don't have the hyper part).
I really struggle with executive function. Can't keep my house tidy etc. Logically, I know this stuff isn't hard. But my brain just doesn't allow for it.
Failed completely at school.
Find making or just having friends hard, I always assume everyone hates me (probably because my parents did and always told me noone would ever like me, etc etc). Never married, no kids. Have a weird relationship with sex to be honest (my parents were overtly sexual, which in itself is abusive).
I possibly have cptsd. Probably have attachment disorder (lots of reports from relatives about how my parents never picked me up, just left me sitting around on my own all the time).
I've read that ND children are more likely to be abused and it fascinates me as to which way round it is. I've read that abuse, particularly attachment disorder, can shorten the neural pathways and elasticity in the brain. Which is similar to the brains of people with autism. So - does autism cause the abuse, or does the abuse cause autism?
I'm pretty sure both my parents were Nd. So there's the familial links too. And their lack of empathy, emotion etc caused trauma on its own, separate to the physical, sexual and psychological abuse.
I try not to dwell on it though. It's not my fault. I can't go back and change anything. I'm 58 now so, essentially, I've survived.