Often when we are emotionally unstable, we see everything around us in a negative light and end up taking emotionally informed decisions which are invariably wrong or biased.  What will you get from hurting yourself? Will your relationships improve? No, in fact they will deteriorate and people will find it difficult to be genuine to you for the fear of you hurting yourself.  Please see a psychiatrist immediately and discuss your situation.  It is important to seek answers and bring the change that is needed within yourself rather than seeking a maladaptive way out.