Self-harming could be your way of coping, or communicating your feelings. Perhaps we could explore your experiences, and consider other ways of coping with your thoughts and feelings.
Self-harm is common, especially among adolescents and young people, although pre-adolescents also self-harm. For some people it can release tension, provide a distraction from distressing thoughts, numb mental pain or even, make one feel something other than 'nothing at all'. It's a complicated phenomenon but it carries risks and if repeated, can become 'addictive'.
People self-harm for many reasons - your experience is unique to you and I will listen to your experience and work alongside you to try to enable you to understand why this works for you, right now, and perhaps, we could explore other ways of coping.