Hi. Have you tried distracting yourself? Tell yourself: I'm not going to hurt myself for the next thirty minutes (eg). When that's up, repeat it. Say it until your urge is under control. Then reward yourself.

Or try:
Watching TV
Going out running
Listening to relaxing music
Having a bath
Writing in your journal
Putting an elastic band around your wrist and pulling it so it hurts
Rubbing ice cubes on your body...etc, etc.

Anything that helps you feel good.

Have courage!