A completely laid back way with no punishments whatsoever and giving them whatever they want?.
I only know of 1 case:
A girl with some sort of hippie-ultra liberals parents, the dad worked like at a garage part time and played with an underground band and the mom was a tatt artist.
The family name was "Heath" so they named the girl "Summer", get it? as in "SUMMER HEAT" because that's totally an amazing name.
The girl was completely obnoxious, she treated everyone like a piece of poop, she was like 14 and walked around pretending to be 28 or something like that and believed the world turned around her.
Really when I looked at her, I said to myself "this is the exact images of what I dont want my kids to become".
Im obviously not saying that you should be showing your kids the belt every time they do something wrong, but I completely agree with a proper punishment when lines are crossed, IMO not doing anything to your kid everytime he does something wrong will just turn him into a really bad person when he grows up.