Model help

I am pretty afraid to be vulnerable, whether it be with a new partner, friends, or colleagues. When I think how they might think about me if they knew all of me (my mistakes, errors, political party), I keep thinking they will judge me for being a bad person. Based on the model, this likely means that I think I am a bad person. I really do think I am a good person, but I have done things I am not proud of or that I perceive others would judge bc it is different than what they think (i.e., political party). Right now I keep most of my thought and stories to myself. I want to get to the point where I can tell people about my past or current views without being so afraid of being judged. How can I get there? Thank you!