How can I stop cutting?

I'm 12 and I have been cutting for a few months... Im always feeling numb so I cut to feel something but I really wanna stop! I didn't cut for the past three weeks but tonight I just felt the urge so I cut my wrist.... I never cut deep, just so it brings blood and a small sting but I really need to stop and I don't want a counsellor or psychologist so please don't suggest that, I also don't wanna talk to my parents.... But what can I do?