"TV is very much a producer and writer or creator-driven machine in the States. And I'm the kind of actor that needs to be pushed and have someone on my case a little bit, so I suffer from that"

Rose Byrne is suggesting that the television industry in the United States is greatly dependent on manufacturers and writers, which she needs someone to press her and keep her on track. She indicates that this is not constantly the case in the United States, and that she requires somebody to be on her case in order to get the very best out of her. This could be interpreted as an indication of her devotion to her craft, as she wants to put in the additional effort to make sure that she is carrying out to the very best of her ability. It could also be viewed as a sign of her humbleness, as she is willing to accept that she needs help in order to reach her complete potential. Eventually, this quote reveals that Rose Byrne is a hardworking and dedicated star who wants to go the extra mile in order to achieve success.