Lille midfielder Rio Mavuba feels the team need to rediscover the mindset they had in the first half of the Ligue 1 campaign.
Third-placed LOSC head into Friday night's home clash against Rennes having lost their previous two league fixtures, 2-1 to Reims and 2-0 at St Etienne.
And speaking at a press conference on Thursday, Mavuba said: ``The defeats against Reims and St Etienne are explained by the fact that we have not displayed the same state of mind that we did in the first half of the season.
``I'm not saying that we lack desire, but I think we can and should make more effort to get results.
``During the last six months, we could rely on solidarity and sacrifice for the collective - this is what we must find again.
``We talked about it and it is clear that we do not want to spoil everything, or overshadow what we have managed to achieve so far.''
Lille bounced back from their double loss by beating Croix 3-0 away in the Coupe de France on Tuesday, and Mavuba sees it as vital that LOSC, who are currently three points clear of fourth-placed St Etienne, now waste no time in ``reviving'' themselves in the league.
He said: ``It is important for us to revive.
``We had a points cushion which has now shrunk a lot.
``We must now switch on in the championship - and as early as Friday against Rennes.''
Those sentiments have been echoed by Lille boss Rene Girard, who is expecting 15th-placed Rennes - without a win in five league games - to provide a tricky assignment.
``We now must take the bull by the horns,'' Girard said.
``They (Rennes) are looking for points and the game looks rough.''
Rennes ended a run of three successive Ligue 1 defeats with goalless draws against Nice and Evian in their last two matches, leaving them six points above the relegation zone.
And, like Lille, they also recorded a confidence-boosting victory in the Coupe de France in midweek as they defeated Boulogne 2-0.