I have dealt with this thought on and off for the past couple years. What my therapist suggested to help is to continually remind myself that I am worthy of love and nothing that happened to me was my fault. I also had my therapist suggest writing down a few things each day that went well, even if it was a rough day. She also told me that I am allowed to feel upset at times even though I have people who support me. She stressed that I should not dwell on thoughts or entirely ignore them, but acknowledge them for a few minutes and attempt to move on. It gets easier with practice.
Sometimes I imagine stuffing my thoughts into a box in my head in order to get rid of them. It seems silly, but when you do it enough it really does work.
It is a hard thought to overcome, but I often will think about "How I am less deserving of life than before my abuse?" And the answer is I'm not any less deserving of life. Deep down, you are still the person you were before the attack, and like someone else mentioned, the traumatic event does not make you who you are.
I know I may not have been of much help, but just know you are not alone in these thoughts.