I do self-harm and have recurrent dreams about self-harming, usually in the context of my family nagging me or my brother being annoying. No one knows I self-harm but in the dreams I bang my head against the wall or i punch myself. It feels like i need to punch harder but I don't have the strength to do so, it's like a force is working against my arm or body and i just can't inflict enough pain (all of that inside the dream).
Btw, sorry for bad English, I'm not native