fear of death

recently i have this terrible fear of my loved ones dying, especially my younger sister, mostly i fear the young dying, i know if anything did happen to one of my loved ones who are young, i dont think i'd be able to cope, i just want to rid myself of this fear, so i can live again. I was wondering if any of you guys out there shared this fear, or if anyones manage to ease this fear and carry on living.
thanks alot
El
xxx