It's a set of default mental models that a person gets inculcated with early in life and repeatedly reinforced over many years. There's no quick and dirty cure.
If you want to sort out how you may be projecting guilt (or projecting guilting behavior) onto other people and how that came to be, you might start a journal.
On HN, the guidelines ask that we assume good faith and take a charitable reading. If you work at that, it's a good exercise in how to sort out who is actually bringing their baggage to the conversation and when it is you, yourself, bringing the baggage.
A good rule of thumb is to observe patterns of behavior. Consider the history of the person speaking whom you seek to judge and consider your own patterns.
I sometimes downvote something on HN and then wonder if it's me, if I really have enough info to judge the comment or if I'm being lazy and reactive without adequate info to properly judge it. If I think "I don't really know that they are behaving badly like I think they are. I'm kind of leaping to conclusions here." I will reverse the downvote.
I usually am trying to understand a comment as best I can from their point of view while respecting myself and why I see it that way. Sometimes it's just not worth hashing out.
There isn't enough time in the day to really understand every random internet stranger, their life story, their personal history, their culture. Sometimes it's better to just drop it as the least worst answer I have in an imperfect world and an imperfect life with a limited amount of time on this earth.
There are people who spend years in therapy tracking down the defects in their own patterns of thought. It's not something that typically gets fixed in a "once and done" fashion.
Though sometimes it does get fixed that way. Sometimes just having the right thing said does make a person go "I did not know that about myself (or about how life works)." And they are permanently changed for the better without a lot of drama.
I feel like this is probably what people mean when they speak of seeking enlightenment -- that magical aha! moment that doesn't hurt and makes everything better forever.
Best of luck in your journey.