"We are happy at the moment because we are top of the table, but we all feel that we can improve as a team," he said.
"If someone had offered us a form to sign at the start of the season that said we would be top of the league at the start of December we would have all signed it, no problem.
"So the fact that we have got there is very positive, but we are still disappointed because our position could have been even better.
"If you think of the game at home to West Ham on Monday night it is clear that we dropped two points because we always expect to win our games at Anfield.
"But we cannot dwell on that because we have got ourselves into a situation in which everything is about what we do - if we keep getting more points than the teams around us then we will stay on top of the table.
"So while we may be a bit disappointed that we do not have more points, the most important thing is that we are top of the league and now we have to try to stay there.
"In a sense, it is good that we feel disappointed because that means we know we must work hard to improve so we don't have such feelings again."