Hello,
These symptoms suggest more towards personality issues. Along with harming yourself you might have emptiness feeling, impulsivity, difficulty in controlling anger, fear that you will be left all alone etc. These symptoms starts affecting your social and working life. These symptoms can be taken care of by psychological therapy and medications.
Next Steps
Contact nearby neuropsychiatric clinic as soon. You can contact me for further help.
Health Tips
Do not take any decision impulsively for which you have to regret later.