I don't think how we're being is as important in therapy as how we think about how we're being :-) I heard desperate defensiveness in your responses to your T rather than "rudeness". Yes, they were rude but that's not what is important. It sounds like you are wishing this stuff were easier and, unfortunately, there's no easy route (no one else can do the work for us/tell us what to do).

If I were you, I'd spend the two weeks between therapy thinking about what you replied and why you replied that way, I'd think about what you could do to make it easier for yourself (we generally know "what" to do but for whatever reason, don't do it) and would start out your session in a couple weeks with "I'm sorry I sounded so rude last time but listen to what I figured out!. . ." and tell your T what you have thought about in those two weeks that might help you move ahead easier.

It's not how you sound that is important but what you do. If you think you sound like a brat, how can you act like an adult?