My sense is that the whole point of therapy is to come to a space where it is safe to face your problems. But sometimes therapy is not enough, because it isn't intensive constant care that we sometimes need when things get really difficult. Sometimes we aren't able to care enough for ourselves and others have to care for us. I think maybe that's what your therapist was suggesting when he/she asked you to go to the hospital if you self-harmed again... It sounds like it may really help you to be cared for and supported at this time. So... Would you be willing to follow your doctor's advice and go the hospital now?