He said: "You can't worry about anybody else, you just worry about that you are doing.
"There is no point saying 'they are doing this' or 'they are doing that' because it is down to us.
"We have won today so I can't have anything to do with the others around us. We are in this position because we have been getting points and for all the teams up there, it's in their own hands.
"We also have a game in hand against Leicester here so if we can keep going and get a couple of people back from injury we can be there or thereabouts.
"In the first half we just lacked a little bit of composure and a lot of the time we were just lashing the ball away and it was coming back at us.
"In the second half once we got the composure and the second goal we had a lot more of the play and deserved the win."
Watford boss Malky Mackay was proud of his side's display despite their defeat, which sees them remain three points above the relegation zone.
He said: "There was a period in the first half where we had numerous chances and I felt we certainly deserved to get something out of the game.
"We have to learn that both boxes count and they certainly did today. But to come down and play the way we did, I have got to be proud of the players. We now have to focus on the next game and get as many points as possible."