DO NOT BE APOLOGETIC!
Of course when you're late to your own shoot or you sneeze coffee out ya nose and into the face of your client, then perhaps you ought to be.
But for the love of all things creative, can we stop with the shuffling, head bowing
"er yeah, I don't know why that's in the folio either" or the
"it's not my favourite shot but this one person once told me it was ok"
Trust the Boss as my old tutor used to tell me, whilst jabbing me in the stomach.
You know deep down that you're doing yourself a disservice.
A happy portfolio makes for a happy photographer!