How do I forgive myself for past mistakes

I would really appreciate it so much if someone took the time to read this and help me. I don’t know what to do anymore. I haven’t posted here in awhile. I had my OCD managed pretty decently for a year or so on medication, but I had to stop taking it, and after around 3-4 months, the OCD has become unbearable again. It used to be much more surrounding existential themes, eating, and others, not really real event/false memory stuff. But now it’s gotten really out of hand and I don’t know how to do it anymore. It’s surrounding a time of my life a long time ago. It was a dark time. I wasn’t myself and I was going through a lot of things, and I did a lot of things I regret. I self-destructed, embarrassed myself, and wasn’t good to the people around me. I was able to get my mind off of it for a long time, even though I would still think about it a good amount. I was able to be in the present, at least moreso than now. But now that I’m off medication, the guilt has become my obsession again. I can’t move on. I can’t do anything without thinking about all of these memories. I’m obsessed. I’ve started hating myself again, so much so that it’s hard to do anything anymore or believe I deserve anything good. The people around me tell me it wasn’t even that bad, but to me it was. To me, I failed myself, lost myself, and failed everyone around me. I can’t stop thinking about every person I said something wrong to or every time I screwed up. I’ve now started to convince myself I did terrible things I can’t remember, and that my mind just can’t deal with it. And that’s why I feel so guilty. There’s nothing to really support this though. But I’m starting to really convince myself that’s true. I’m trying not to listen to it, because I’ve convinced myself I have hit people with my car before and haven’t remembered when I absolutely didn’t and I know I never have. I drive back over and over to check there’s no one, even though I never heard any bang or felt myself anything. I can convince myself of some crazy false memories. So I know that I shouldn’t listen. But it’s hard not to when I have this guilt gnawing at me constantly. I come to conclusions that this guilt must be because I did something terrible that I don’t remember, even though I already think the things I remember were bad enough. But I would know by now right? If I did something bad I don’t remember? I don’t feel like this all the time. But it’s a lot of the time. But maybe that should be reassuring, that I only start obsessing like this when I think to. The past haunts me though. And I can never be in the present. I’ve started to resort to some unhealthy behaviors to distract myself or help me work towards something. I am starting to hate myself so much and feel like there’s no way I’ll ever be able to get out of this loop. I feel like I just can’t do this anymore. Maybe I need to go back on medication. But I don’t know. I don’t really want to. But will I ever fix this without it? Why do I feel SO guilty, all of the time? I do all these things for people because I feel indebted to them, because I feel undeserving of everything. I feel awful about myself. I don’t know what to do. Does anyone else deal with this?

I’ve posted something vulnerable here before and I’m trying to ride out the wave of reassurance where it’s getting at me and I’m scared of sitting still with nobody to talk to about this at the moment I genuinely think it would be easier if I wasn’t around. I view my friends as pure compared to me and I’m the most impurest. I feel like this would do a favour to stop being here I don’t know what to do, I really don’t know. I’m literally alone in this and I’m getting tired. How do you deal with stupid choices that you made as a child? I’m trying to be understanding of past mistakes but it’s gut wrenching to try and accept to say and admit you did it knowing you’ll spend the rest of your life with that guilt..is there another perspective to this..???

I need to know how to deal with unforgivable real events. The type that would have most people hate you if they knew what they’re were. I can barely get over the guilt of the things I’ve done and struggle to move past them. Some days I get closer to moving on and other days it all hits me in one big wave and makes me spiral. It’s terrible because they were genuinely bad things that I don’t think I can forgive myself. I just don’t know how to deal with it anymore.