Personality disorder characterized by persistent antisocial behavior, impaired empathy and remorse, and bold, disinhibited, and egotistical traitsWikipedia
Seems you’re not since in this post you show empathy, remorse, and examining your flaws is anti-egotistical. Though you may think of not conforming to social norms as antisocial behavior, many people do this and put on a “public” facade.
Though, being “honest to a fault” is a little antisocial depending on how far you take that. Is it just “I never give a lie to a direct question.” Or: Do you always correct people who you know told a lie? Do you interject in stories where a lie has been told? Do you tell people unsolicited truths that are hurtful? Some would consider the latter list of behaviors to be antisocial.
It’s good to self-evaluate. I know I have some manipulative habits, I definitely lie too easily, sometimes without remorse, but I don’t fit a majority of the markers: I feel immense remorse at certain things, I’m not arrogant, I’m genuinely helpful, not just manipulatively so, etc. I would consider talking more in dept with your friends that want to cut ties or express frustration and hear out their concerns. We all have areas for self improvement, so don’t just yourself too harshly. Maybe as another commenter suggested, go to therapy and see what you can uncover.