Thats all we can do, our best and hope it sinks in. I probably wasn't as strict (my parents weren't) but we had one daughter that even the counselors said we had to really pick our battles or she would just up and leave. And the other totally hooked up with church kids and didn't need it. Always home on time, etc...Good news is the little trouble maker does triathlons now, doesn't drink, home early...Proof prayer and diligence works. They do have to make their own choices. Sometimes better to let them make a few mistakes in the safe haven of the home.