A lot of space is given to the origins of a research project in how we think about the viva and what you might need to talk about. How did you get started? What ideas influenced your first steps? What literature did you read?
Lots of space is also given to the outcomes of a PhD. What are your conclusions? What results helped you reach those conclusions? What’s the overall result of your thesis?
These two themes are important, but we mustn’t forget the middle of your PhD. The middle where you kept going. The middle where you most likely found your way past dead ends and small failures.
How did you get through the middle? What did you learn? How did you keep going – and how could you use that to keep going now?