Intrusive narcissistic thoughts, any advice?

I've been struggling with an immense, sometimes deabilitating obsession about NPD. I've been an asshole, I've done terrible things, but I was a stupid teen back then, and I came to a conclusion after a rough time that it might just possibly be my OCD fooling me, once again. This time I'm struggling with those intrusive thoughts that appear out of nowhere. Sometimes, I have a thought that is something along the lines of "I'm better than X". There are a few more that appeared recently and each time I try to brush it off and disagree with it because I genuinely don't agree with it. I keep living in fear of comitting something self centered and I keep on overanalyzing my past just to never reach the answer.

Does anyone relate? I would love to hear some words of advice.