Do we see a problem yet?
I've been much closer to your situation than you have ever been to mine. I've had a single child, but you've never dealt with a group of your own children.
You sound like a tutor who cannot understand why a classroom teacher would ever have to raise her voice.
This is the part of the discussion I don't follow. Were you supposed to raise your four kids by different philosophies until you found the one that didn't work?