I just officially registered to take my PhD exams (we call them "prelims" here) in January. Two months from this week.
I'm frightened. I have my schedule of what I need to read and study, and it's a LOT. And will take a LOT of time. And my friends who've already gone through this process and passed prelims have told me that I need to give up on having balance in my life until after prelims are over.
And I've been feeling a little of this recently.