It has been over a week since you made this thread, OP; I hope you were able to reach out to a trusted adult or professional to get the support you need. I don't think there's anything wrong with going to a hospital and saying you need help combating your self-harm. It does not mean you are weak or attention-seeking; on the contrary, it shows that you acknowledge your struggles and want to get help overcoming them.

Wishing you all the best.