I never get anything positive back. If I send in anything, even if it is a comment on something or a question, I can be sure to get something negative or nothing back. The other day, I got
'It's coming on nicely, so keep it going' after sending in 4000 words of my Lit. Review, this was after 5 bullet points on what was wrong. I was actually over the moon, the nearest to a positive so far. I actually sit poised over my send button, psyching myself up for the response I know I will get. I dread meetings, had one last week and another on Thursday, am so nervous that I feel physically sick and wonder why on earth am I doing this But, I love my PhD really and that is what keeps me going.