How to stop being afraid of

Hi All, just wondering if anyone here has any tips with dealing with uncertainty? My OCD centres on my being worried that I have committed a crime and can’t remember doing so, I was out last weekend and my mind is telling me I attacked somebody as I got an intrusive thought to do so when passing them in a bar, my therapist says I need to sit with the uncertainty that maybe I did and maybe I didn’t and have to be ok with that But if the answer is yes then how can I be ok with committing a crime and going to jail??, it’s affecting my relationship and I’m going on holiday on Friday and I’m worried it will ruin that, any tips would be greatly appreciated.

I know I shouldn’t and I’m trying not to ask for reassurance but how do I deal with this when I made real event mistakes in childhood? I’ve opened up to my cousin about this who’s an adult and believes that kids can be influenced at a young age and mimic things that they see and friends and my therapist. They all see the good in me and my stupid childhood mistakes but the guilt is very strong and even though I’ve opened up It’s telling me to open up more and more and I don’t know what else it wants from me.

I have had the same false memory/instrusive image of me doing something horrible to someone when I was 12 and they were younger. It is a memory based on a real event. I truly don’t know if it’s real or not but obviously, the more I think about it the more I think it’s true. This has led my mind to become slightly paranoid. I worry that if this horrible image in my head is true then one day the person I might have hurt will come and k*ll me. I’m really scared I feel like I won’t feel better as long as this “memory” is in my head. Does anyone have advice?