Keeping Track
If you keep track of your PhD journey you can see where you grow and how your work develops.
If you keep track of your viva prep you can see that you are moving closer to being done.
If you keep track of your own capability you can find a sense of confidence for your viva.
Doing things matters. Do the work, do the prep and do what you can to become a good researcher.
Keeping track matters too. Recognise what you have done and what that means for you.