What have you got that will give you that little boost of ability, of focus, of comfort and confidence before your viva?
Will it be a piece of music? A cup of coffee? A mantra or a prayer or a hug?
Checking one more paper? Reading your opening or closing chapter one more time?
A mock viva or a chat with a friend? An hour in a cafe, quietly sipping some tea and doing a crossword?
Maybe it’s none of these. Maybe you’re feeling fine for your viva.
But if you need something look for a power up.