Difference between logic and self reassurance?

When I was a child, before I knew this was OCD, I struggled with constant "magical thinking" compulsions (don't step on the crack or mom's back will actually break, etc). When I later learned this was OCD, it almost immediately solved it. Any time I got a magical thought, I would say to myself "that's just an OCD thought. ignore it." and it just stopped coming! Like seriously it fixed the magical thinking stuff forever. But of course the OCD has resurfaced in other ways. So naturally, I've tried to use the same strategy since I had so much success with it previously. But I wonder sometimes if telling myself "that's just OCD" is almost functioning as a reassurance compulsion? I hate how meta this gets. For example, I have ROCD that comes and goes. So sometimes I'll get a thought like "what if i'm still in love with my ex?" and then I'll tell myself "that's obviously just an ROCD thought" and will feel relief, almost like reassurance. But it comes back. So is telling myself that it's OCD a reassurance compulsion ?? It's just so weird because it worked so perfectly as a kid with the magical thinking thing.

I'm thinking of trying some ERP on my own while I wait for treatment, but I'm having some trouble knowing what is a compulsion and what would be good exposure. For example, I have huge fears of being a narcissist and/or a generally bad person. So whenever I watch a movie or read something that has an evil character in it I automatically compare myself to that character and stress over if I'm like that person. A couple of things I do when this happens is Google other people's experiences, seek reassurance, rumination, etc. Sometimes I'll also google different symptoms of narcissism, freak out over things that I relate to, then get relief over things I don't. So my confusion is, would researching people who have narcissism be an exposure, or a compulsion since it's something I sometimes do during a spiral? Or, would the exposure be watching movies/living life hearing these stories, and refraining from the spiral of rumination and no Googling at all?

Hi! I've been on my OCD healing journey for about half a year and I have seen a lot of success. I'm reaching out for advice, I am very willing to do exposures because I know the more I do them, the more I get better, but I struggle with the response prevention part. I don't know how to control my brain when it comes to facing the fears especially since most of my compulsions are mental. I can tell myself the typical things "I am okay with the uncertainty of this happening", etc. but its like my brain doesn't believe them. I've been stuck in this disconnect for a while and would love advice you have heard from a therapist or learned that has really help you.