Dealing with Rejection Sensitivity in Communication with Friends

I feel like a bad friend for getting defensive when my friend asks for reassurance; with RSD it feels like they’re rejecting a core thing about me, but I know it’s more about clarifying for them what my intention was and how I work. But I still feel like my explanation isn’t good enough, and the fear of not being believed about having good intentions is so strong. How do you work through your rejection sensitivity to have healthy communication? I don’t want to react to these emotions, but I also want to be fair and share how I’m feeling. In the past, I’ve just done the “right thing” and adjusted all my language to remove any emotion that might be deemed defensive. But then, I never really find a way to talk about how it made me feel.