So where do I begin?

I'll call her Miki. I've known her for awhile, she seems really down to earth, but kinda desperate for the attention and the approval of a guy. I know I know, you live and learn. But doesn't it ever come to a point when you realize you're in an endless cycle of self destruction? I mean, there's only so much I can tell a person, the rest is left up to them. But shouldn't Miki see the pattern? Miki will date a guy, have sex with him, get attached, and when he leaves her she'll be heart broken. She obviously has very low self-esteem. I just wish she could sense her self-worth, love herself; she's a great girl who will make a guy really happy oneday. So what does a person like her do in such a tricky situation? I don't see her stopping anytime soon, which is dangerous because by the time she realizes what she's doing, she might've already gotten pregnant or caught something. I won't give up on her though, I just hope that eventually my words will eventually sink in.