Struggling with Narcissistic Personality Disorder

I am fashionably late to this but if you want input from someone who actually has NPD, there are a lot of facets to this disorder. Some of the overlaps you're describing could relate to autism. When I'm with autistic friends I usually do realize they unintentionally monopolize conversations, and that is fine. Not understanding social cues is something we have in common. A narcissistic monopolizing of a conversation would be to brag or share achievements, and make yourself look as good as possible. Not necessarily just talking about yourself, but to make yourself look successful above all else. The root idea is that without success, you're nothing. The whole goal is to avoid the feelings of worthlessness. There are so many other facets to this disorder including intense feelings of shame and embarrassment, trouble with emotional empathy, dissociation, & problems forming connections. You can talk to me at any time if you want to expand on your feelings about this, if you're still wondering. Unlike what someone above me said, we are capable of caring and even feeling frustration that we are the way that we are and my PD has gotten in the way of so many things with friends and relationships that everyday I work on improving. We are not soulless monsters whose only existence is to abuse.