My parents are gone

My father passed away almost 6 years ago from AIDS and he gave it to my mother who passed away 5 years ago. The pain that is in my heart and always in my thoughts have not lessened. I am 27 but feel like I am stuck at 18. I can't seem to move on or go really anywhere with my life. This has broken apart my family; the holidays are so hard for me. I am so angry they left!