Just trying to keep head above water...

It has been six years now. Six years to the day where my life has changed forever. I was in a terrible accident, which left me dealing with learning to walk again. It has been years since my physical recovery, but somehow emotionally this event surfaces on a regular basis. I have repressed it for years (tried to), but in the midst of one of my recent depressive episodes (last year), this whole event came up bubbling to the surface, and has done so frequently ever since. This is something I have addressed in therapy, but somehow I just cant get over it. It comes up in the subconscious mind so many times (when looking back, this is what my therapist has brought to light). Why is it I just cant properly deal with it and move on...It just keeps haunting me, following me around like a shadow...I just want it to disappear. But its going no where. Although I have addressed it for the last year in therapy, it is still very raw, like opening up an old wound and rubbing salt in to it every time. I cant deal with the pain any more...when will it go away?