Dissociative disorder. Or lifelong?

Sir my age is 29 I am suffering from dissociative identity disorder.curently I have symptoms of depression anxiety stress and intermittently pannick attack.i have always fear of getting die.some psychotic thoughts also come in mind.i feel like I have lost all my control.i have given personality test but it can't give me accurate diagnosis.some test misdignose as a borderline personality disorder.i have gone through web for this condition but I don't have any type of abuse like sexual physical and substance.some people in my life triggers personality changes.it may be my friends,relatives etc.iam always remains in thoughts about future and past.i can't pay proper attention to my work.low mood is also there.can u tell me it's perfectly treatable condition or lifelong??? And I have to always stuck on medication for lifelong plz let me know sir.