Work Friendships Revisited

I have a question about the episode 756: Seeking Reconciliation After Abusing a Relation | Feedback Friday and the clip Navigating Work Friendships. I'm also frustrated about how I acted—responsive and thankful but also annoyed. Kaitlyn suggested I do something differently, but overall, I have a weird relationship with this one manager at work. I'm going to change how I've been acting. I'm just an intern, but it's not obvious; everyone else loves me, and I love them. It's just this one person, and I need to change my attitude. She rarely gives me the space to explain and often asserts herself in the middle of presentations without letting me continue. It's very different from everyone else there. While it's useful in some ways, it's also frustrating. I'm proud that I recognize I need to adjust to her behavior. Will this change help her loosen her resistance too? But now, I'm feeling like I've had a negative impression on everyone and done a horrible job this summer. I know I haven't; I'm getting a return offer. But what is this feeling of self-doubt?