I was raised by a borderline father and a sadistic narcissist mother.

They both abused me heavily and I wonder:

When you do something that is objectively bad, do you subjectively know it?

I watch “The good Place” and one of the characters says:
“When I did something bad, a little voice would tell me that what I did was bad. Eleonore, you shouldn’t have stolen that olives.” (paraphrased).

https://youtu.be/fHFQfPUqzKk

I totally have this little voice that tells me in advance that what I’m thinking of doing is bad or what I want to say is counterproductive. Also whenever I say something that was mean, I immediately realize it and excuse myself or stop in the middle and tell the person: “I’m gonna stop talking, what I was going to say is bullshit, I need to think about it.”

Do borderliners not have this little voice or only to a certain degree? Does it tell you that what you’re doing is perfectly fine? Does it tell you that what you’re doing is bad but you ignore/overrule it?