I dont control my memories. but I did once ask my therapist this same question. his response was can you un see this toy duck, can you un hear the sound its making, can you un feel the texture of the ducks bill (felt material) after feeling it....try it listen. he made the duck quack... now tell me what did it sound like? my answer "quack" ok now un hear it. I spent a week trying to unhear that quack before I realized I cant control the memory of hearing that quack by un hearing it.

since then I have never tried to ......control.....my memories. all I can control is me and how I react to my memories. I switched my focus off of controlling the memory and onto what I wanted to do about how I react to memories.

that therapist taught me how to do grounding and breathing so that memories did not trigger me into my PTSD reactions/ problems.

maybe you and your treatment providers can work on this too, where you can find things that will help you to not feel so triggered when memories strike.