Why can't I stop self-harming, even when I know it is bad?

Self harming can become an addiction rather than just a coping mechanism. When you try to quit self harm you might suffer withdrawal symptoms which make you feel like you need to cut again even though you know it's bad.

Self-harm is usually a coping mechanism, usually if you're overwhelmed by your feelings it can be a distraction or the rush that follows the pain temporarily makes the feelings go away. Like any coping mechanism, if you try to stop without replacing it with another one, you will struggle. First find other ways to cope with the feelings you're having, if it's possible try and deal with the problem causing those feelings and then you can begin to try and stop self-harming.

Well yes i can stop self harming some times becuase of the mistakes cause i never can blame any person for my problem where i can neither fight them nor harm them hence even knowing its bad to do so I'll just do it to never commit the same mistake again ;(

Self harming can become addictive. When you keep doing it can becoming comforting or familiar. And you just want to keep doing it. It's almost like getting stuck in a rut. It's very difficult to stop. But it is possible so don't give up. When you feel the urge to cut find help or someone to talk to.

self harming is certainly an addiction. Though it is bad, relief related horomones are released and the feelings of it is seminal enough to make the person continue to inflict pain.

Self-harm is an addiction. When you're under stress and you cut, your body releases endorphins to deal with the physical pain, Endorphins are the "happy hormones", so mentally, as a result of this you feel better.

Self-harm is additive it is habit forming consider the difficulty of stopping self-harm to the Difficulty of someone who's trying to stop smoking both are challenging to overcome

well, you have to find out why you are doing it in the first place, address the cause. Self-harming seems like a symptom while you need to treat the cause.

Self-harm/mutilation is typically used as a coping mechanism when someone else has few or no either ways to let go of some sort of negative emotions. This is because the brain sees the pain; and forgets about the emotional issues; even if it is just for a moment or few at a time. Usually, people know self-harming is bad, but it is like an addiction, almost like a drug. You can’t stop because you feel better when you self-harm. You may somehow feel as if you deserve this kind of pain, but in reality you don’t deserve the pain. If you wanna to stop self harming you can text ‘help’ to 741-741, or speak to a listener on 7cups