"The Premier League doesn't respect names, reputations or history," said 31-year-old Norwich striker Holt.
"Only hard work and good football gets you points - and we are proof of that.
"Any team can get dragged into a scrap, if they get on a bad run of results. It's a cliche, but there really are no easy games for anybody.
"It is surprising to see teams like Sunderland and Newcastle struggling because they have so much quality and nobody really expected it.
"But, on the other hand, look at teams like West Brom and Swansea this season. Very few people would have predicted their good start.
"Things are going well for us at the moment. But our first aim still has to be that we make sure we stay in the division and beat the teams around us, like Sunderland."