I've had this from two different therapists now. Firstly, I was diagnosed bulimic two years ago and had some *zoom sessions with an eating disorders therapist. In between two sessions I had a memory surface of the first time I turned to food for comfort. It was a traumatic experience and happened when I was about 7 years old. When I next had a session, I told the therapist about the memory and he completely dismissed it, saying I shouldn't be letting something that happened 40 years ago affect me now. I felt completely disrespected and dismissed.
Fast forward to today. I am getting CBT/therapy again, via zoom, for low mood and anxiety. I tried explaining to the therapist that I relive very traumatic times, from my childhood and adult life, in my head over and over, specially at night. I do not choose to think this way, the thoughts just come. He also told me to stop thinking of them (If only I could!) and it doesn't help to think of things that happened years ago. That there is no therapy to help as what happened, happened and I can change it.
Are they right? If so, how do I get over it? Like I said, I don't choose to have these memories playing in my head, they just do. (*I have sessions over the internet as I'm also agoraphobic.)