West Ham manager Slaven Bilic says he won't let his team become content with their performances, as he aims to maintain their lofty league position.
The Hammers are up in third in the Premier League standings following their 2-1 win over Chelsea, and the Croatian is determined to keep performances levels high.
"We are only a quarter of the way through the season," he told the club's official website. "To be honest, I don't even think about football like that. One quarter, so what? All we want to do is concentrate on the next game.
"If we drop by even five percent then we are in trouble. We have to be in what I call the red zone all the time, we can never be in the comfort zone, and it can take ages to get out of it.
"So we can never be carried away. Only when it is five games to the end of the season or so that we can concentrate on the league positions.
"There is nothing wrong in gaining the confidence from winning. If we can maintain it, every game, then we have a chance against anyone.
"We have the momentum, which is important, it comes out of good training, good players, good system and individual class but it can also disappear in a moment.
"We still have to be ready for every game, and make sure we reproduce the same when we play Watford," he concluded, with the league match against the Hornets coming up next Saturday."