I ask people how they feel about the viva at the start of viva prep workshops. It’s rare for candidates to say excited. Sometimes people will frame excitement as “excited that my PhD is almost over” but that’s quite different from “excited that I get to talk to my examiners about my research.”
You can’t cherry pick the discussion in the viva, and it’s not wise to only focus on the good stuff in your prep, but you can take control of where some of your motivation is coming from for the viva. If you ask the right questions you can inspire yourself. Maybe if you have any anxiety about it all, you can change the way that you think about it.
So, to start, what are you excited to talk about with your examiners?