I guess we all have to learn everything from experience. I remember 100 years ago, when I was a child, I thought I knew how so many things worked and how I didn't listen to advice. Goodness, I remembered when I was first married and I still thought I knew everything and refused to listen to older, more experienced people.
And, now it's happening in reverse. I try to tell (or to suggest) the easier or more way to do something to someone younger and get the cranky "I know what I'm doing" response... or the remark I got that I really 'appreciated',.. You don't know what you're talking about!" Ahh, youth! They have to find out for themselves... the hard way... like I did!