The newly-promoted Canaries got their first victory of the season last weekend at Bolton Wanderers and take on Sunderland at Carrow Road tomorrow evening.
Ahead of that match with the Black Cats, Fox has claimed that the win over Bolton has given his side plenty of confidence.
"It just shows there's nothing to fear now we've got that weight off our shoulders, and now we can go and turn those good performances into three points, which we need," he told the club's official website.
"If we can go to places like Bolton and win it gives everyone a massive confidence boost going into the next few games.
"There's a lot better atmosphere around the place, and now we've got that win
under our belts, which our performances have deserved."
Fox, 27, has made two appearances in the league this season.