I'm sure everyone knows someone who acts this way. Their ways are set in stone and they think their way is the ONLY way. It's pretty aggravating to the rest of the world. Especially when they start preaching...without being asked.
I have my own ways of doing things, whether it be cooking, cleaning, parenting, exercising, whatever. I do the things the way I do them because I feel it's best FOR ME. It works FOR ME. But I never try and tell people my way is the only way. I thoroughly believe everyone needs to find their own ways of doing everything and they won't be the same as my ways. And that is 100% okay. If someone asks me for advice, I will tell them what I do and what works for me. But I in no way try and convince them it's the only way. Everyone needs to figure out their lives by trial and error.
Even my kids. Yeah, my daughter is only 9, but even now I try to make her figure things out for herself. Me telling her the answers to everything, or forcing her to do everything my way, only stunts her creativity and individuality. I don't want a clone of a daughter. I want to raise an independent woman. My parents always encouraged me to become my own person and I've loved them for that. I am pretty different from them, and that's okay. I'm still a responsible adult even though I do things differently from them.