If you are trying to commit suicide or do major damage to yourself, then yes, you should go inpatient. Are your cuts deep or in places that have the potential to cause great harm? If you are not trying to commit suicide or you are doing mild damage to yourself, you might want to get a counselor if you do not already have one. The counselor can help you to try to fix the root of your problem that is causing you to self-harm. When you feel like harming yourself, do you have a friend you could call? Talking to a friend could help you to feel better.