Willian says Chelsea must be more clinical in front of goal.
The Blues had 17 shots on goal in the first half without a goal in Saturday's 2-0 win over Brighton.
"We needed it," the Brazilian told the club's website.
"We have been working hard every day, every game and this time we finally got the result, got the three points at home and we have to carry on. We have to continue in the same way.
"The game could have been 3-0 or 4-0. In the first half we created a lot of chances and I think we have to be more clinical.
"We cannot miss chances like this and we have to now think about the next game.
"The clean sheet means we get confidence now. We will have more confidence in the next games and we have to carry on the same way.
"If we want to stay at the top of the table we have to win points and win games, so we go for it. We have to keep pushing and working hard, and I think we can do that."
