Actual parent of kids who turned out be civilized human beings here.
I never felt resentful when ivory-tower experts had an idea about child rearing, because I could always look up their sources and decide for myself whether that evidence was credible. Often I didn't find their claims credible, but other times I did. The problem with the self-appointed "experts" who have no evidence to support this claim. These come in two flavors, those who recast parenting fads as "science", but actually have no evidence to support their claims; and "traditionalists" who advocate corporal punishment. The traditionalist's evidence tends to be, "Dad used to whup the hell out of me, and look how I turned out." Well, you seem OK, but so do a lot of other people who were raised completely differently from you.
The truth is that most people seem to turn out more or less OK. I believe there's a powerful tendency for kids to grow up average-ish that thwarts every parenting philosophy, and rescues kids from some truly awful parenting.
I had a friend growing up whose mother "taught" her children to be careful with fire by burning their hands on the stove when they were toddlers. This was before mandatory reporting, so nobody realized on her youngest that this was the third toddler she'd brought into the emergency room with serious hand burns. She also beat her kids with a razor strap whenever they annoyed her -- who the hell kept a razor strap in their house, even back in the 60s? In the summer she kicked her kids out of the house when she woke up at 7AM and wouldn't let them back in until 7PM, not even to use the bathroom. They used to shit on the street, until my Mom found out and let them use our bathroom. Families in the neighborhood fed them like stray cats. You'd think kids raised that way would be totally dsyfunctional adults, but in fact these kids all grew up to be, apparently, normal. Just like my brothers and sisters. We grew up in a tight-knit, permissive household where physical punishment was never used, and we turned out to be normal, law-abiding adults.
I'm not saying parenting doesn't matter. I'm saying relax and enjoy one of life's great experiences. Do your best to do what's right, but don't worry when people tell you (as they will) that that's wrong. There's more than one way to do it, and you can recover from a few mistakes, or even a lot of mistakes. Parenting is one of the few endeavors where sincere effort counts in itself.