If I refuse treatment for DID, will it get worse? What might happen to me?

It has been determined that I have multiple personalities, We know of at least 5 personalities. The therapist wants to integrate my personalities. I fear that it will adversely change who I really am. If I refuse treatment will it get worse? I currently do not harm myself nor others around me. I know that I go places and do things that I have no memory and that my family and friends have encountered the other in my life. I currently refuse anti depressants and other types of drugs. My life is pretty chaotic and I never know from one day to the next what has happened or what I have done