Javier Mascherano has called on his Liverpool teammates to draw strength from last season's triumphs over Manchester United as the Reds look to turn their season around on Sunday.
The midfielder believes a win against Manchester United would be a huge confidence boost for the team as they try to get their Premier League campaign back on track.
"We have lost four games in a row and we have got to keep going and working really hard," Mascherano said.
"Now, United is massive for us. But we have done it before and we have to keep believing in ourselves.
"We have got to try to remember what we have done in the past. We know that people will be looking at us, asking questions and the supporters are very disappointed. We know, though, that everyone will be behind us.
"It is difficult because Liverpool is not a side that loses lots of games in a season but already we have lost six. It is very hard to take but we cannot keep thinking about it. We have just got to make sure we win against United to bring back confidence."
The Argentina skipper is hoping Steven Gerrard and Fernando Torres are back in the ranks for the clash against Manchester United.
"It will be great for us if we can give everyone a win. We have won a lot of games with Steven and Fernando but in this situation we want to have them with us. They are so important, our key players.
"All the time we are trying to give our best. Sometimes we can do it, other times this season that has not been the case. But now we have got to show character and personality, as well as making sure we improve our work rate."
The midfielder refuses to believe that a defeat against Alex Ferguson's men would end Liverpool's title hopes this season, but he insists a victory would provide a timely confidence boost.
He said: "This result won't decide the season but for us, in terms of boosting our confidence, it is a massive game. If we can win, Monday will be totally different. I believe we can win.
"If we start to win again - and win lots of games - anything is possible. We cannot drop more points. We have got to start on Sunday and not stop."