Dear, cutting is not the solution. It's never been a solution. The pain of cutting makes the flashbacks more vivid and horrible. You began to experience the pain of past in your present. Don't let your past consume your present. You are a strong person who survived all that and who's still fighting. Believe me if you made it till today, it means you have got something special in you. It is your courage to hold on. If you've courage to face all the worst that life gave you then you surely is going to achieve the best out of it.
Your life does not depends on others. Live it for your own self. You can soon prove your worth to this world.