You know that way if you come back from a holiday, or start a new job, or anything you might be apprehensive about professionally, and you worry but ameliorate this by telling yourself that it can't possibly be as bad as you think it's going to be?
Nine times out of ten this would be the right attitude to take, in my experience.
But this is one of those one in ten moments.
I haven't been so tired since my son was first born.
For those who don't know, that's tired - soul-tired...