You’ve done everything you can, become everything you are, know everything you can and need to know.
Viva day comes and you have to leap and trust you’ll reach the other side. A day that’s different from all the others in your PhD life, but still just a day like any other.
You’ve got what you need. So now you come to it: a leap of faith, an act of confidence.
Of course you’ll reach the other side of your examiners’ questions and discussion. How could you not?