When you tell your child 100 times to not do something or to stop doing something before they get hurt and....?

I tell my kids over and over and OVER not to do something because they will get hurt and the keep doing it, and eventually get hurt. I tell them "If you would have listened to me you wouldn't have gotten hurt" then I tell them "I don't feel bad for you, maybe next time you will listen when I tell you not to do something" Sometimes it works.... most times it doesn't.. I suppose eventually they will get the hint when momma says your going to get hurt you really will get hurt.