Chelsea manager Frank Lampard believes that his team can get much better.

The Blues are enjoying an excellent run in the Premier League, which has seen them solidify fourth place in the table.

They are six clear of Arsenal in fifth, but they are eight points off the top of the table.

Lampard believes they must focus on themselves and continue to improve.

"We're looking in the mirror at ourselves," he told a news conference ahead of hosting Crystal Palace on Saturday.

"Up and down are things you can't always control - what will be will be with those teams. They have their problems or strong points or whatever.

"What we have to do is look at ourselves week in, week out, look at Crystal Palace tomorrow, go away for the internationals, and then we come back and we play Manchester City. Every week brings the challenge of a game.

"At the moment, we're happy with what we've done but I think we can always get a lot better. That's the only way: I don't think we should look too much anywhere else, rather than within."