Please submit another request with more information as it is very difficult to help you without knowing more about your situation. In what way have you been abandoned? By a boy/girlfriend? By your family? When did this happen and what led up to it? Why did you start cutting and have you sought any professional help?
Please submit another request with more info so that we can better help you to get through this tough time.
If nothing else then please try and remember that self harm can lead to serious injury and that it rarely solves your problem. You need to find healthier ways to vent your emotions and deal with the horrible feelings that you must have pent up inside you to make you do this to yourself. I know that is so much easier said than done, but please seek some professional help either from your doctor or from a counsellor. It is an incredibly difficult move to make, but you really do need help in identifying what you are feeling and why and in finding less destructive strategies to deal with those emotions. You have your life ahead of you and you should give yourself a chance to make something of that rather rthan destroying it now. There is always hope, please believe me.
Submit another request with more info so we can help you better.