I have been thinking about this a lot lately. I wasn't a major dating know-it-all when I was younger, but I did feel that trusting my instincts was better than any advice anyone could give me. In some respects, I still agree with that. But there were moments when I really could have saved myself a lot of pain if I had listened to my friends and family.
I recently wrote an article on the topic - Things I Wish I'd Known About Dating When I Was 20. Take a look, and tell me what things you would tell yourself about dating if you could go back in time.