Just because someone write a poetry like this, doesn't mean they want to kill themselves. Some writers like to take the venom out of their hearts, this way only good feelings can be left there. Maybe the poet isn't talking about self-suicidal. It doesn't mean that the girl in the poetry is hurting herself. Maybe the poet is talking about how we hurt ourselves emotionally, not physically. Anyways, I really love this piece. Good Job!
I write poems and songs too like these! :3