I sort of struggle with understanding why self-harm is deemed a bad thing. I get it to a certain degree, like when people cause actual harm to their bodies by injuring muscles or causing too much blood loss or similar. I get why that's bad.
I swear I'm not glorifying hurting yourself but when I did it I felt like I could breathe normally for the first time in weeks. The noise in my head finally stopped. Overthinking and stressing myself out seems far more harmful to me than causing some superficial scarring on my skin.