Raising Children

Hello everyone. I don't know what the rules/parameters are for posting, yet. So just let me know when I'm out of line, Whitney (or you can forward a big old list of "John Rules"). :)
Today I was listening to a talk that Brad Wilcox gave (he is a John Bytheway style LDS/motivational speaker that I first saw at EFY). His talk was on pornography and it being Satan's counterfeit of the sacred act of marital sex. In a brief digression, he said something that got me laughing, but also summed-up one of my big fears for raising daughters. He said, "Girls, quit putting your whole self-esteem in the hands of some 16 year-old boy who would rather be with a taco."
A lack of self-esteem/self worth was something that I noticed in far too many girls growing up, and even as I got older, too. So, I guess my question/concern is how to help my future daughters understand their worth and that they really are daughters of God. I feel like if I can just help them understand their worth and who they are, they won't have to struggle with eating disorders, or chastity, or half of the plagues that affect girls spiritually, physically, mentally, and emotionally.