Cravings anyone?

Does anyone else have a constant craving for something they can't have?

For me, it's a constant, insatiable desire to consume meat. I don't mean like eating some chicken or lunch meat, nothing cooked. I mean bloody, visceral, fangs to veins chewing something or someone apart like a wild animal. I know I sound insane, and I feel such a shame for even the thought of it, but it grows and gnaws at me everyday. I worry I will eventually snap and they will find my body curled around the shredded remains of what was once a friend. 

Anyway I'm watching the anime Nana and it's so silly!!! I love lesbians and it's a shame they were never able to get together