This was a poem I wrote about a year ago as an outcry of guilt from inside. Asking for Christ to forgive me. I hope it brings a little light of hope in this forum, because I know how dark self harm can be (Don't get me wrong, it's a great forum, but you can never have too much encouragement). But mostly I hope it blesses you the way it blessed me when I reread it.
Self harm and the guilt it brings is a battle worth fighting against. I promise.

I ask forgiveness, but you've already given it
On my knees crying
Clutching my wrist
My heart
My veins
I'm so sorry
But you've already forgiven
Don't you see them though?
I hate them
Nothing but doors into the past
Cruel reminders of pain
Horrible pain
At times I just want to forget
And I'm sorry
My body is not my own
The blood you spilt for me
It was far more than enough
Because your scars
They cover my scars
And you are enough.
So I whisper again
I'm sorry
But you hold my wrists in your nail scarred hands
And you say to me:
My child,
I have forgiven you
It's time for you to forgive yourself