The way my upbringing affected my judgements is simple; "I'll never do that to MY kids." For the most part, I stuck to that resolve. As I grew older, I realized just how judgemental my mother was. Mercy!!

She was usually wrong, too.
The ONLY thing I remember my dad ever saying to me was in response to a question I had. Don't have a clue where it came from, but I told him "Daddy, I don't love myself. Do you love yourself?" His answer was, "The Bible tells us we should love ourselves like we love others." I didn't believe him. I thought it was wrong. I think maybe the "other" person that lived with us, other than my mother, loved herself WAAAAY too much and I sure didn't want to be like HER!
For the most part, after almost 62 yrs of experience, I find that I'm seldmon judgemental of people but I am of circumstances and situations. ...and I still haven't listened to my dad from all those many years ago.
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.