That was me with flossing. My parents and childhood dentist always TOLD me to floss, and you just stick the floss between your teeth and that's flossing. I thought it was dumb and didn't do anything to help my teeth so I never really did it. Until as an adult my dental hygienist explained in detail you need to scrape the sides of your teeth with the floss and go up/down the tooth as far as you can without hurting yourself. Then demonstrated on herself, and then asked me to do it in front of her so she could see if I was doing it right. Great lady.