La Roja's boss has stressed the importance of his side beating the Bleus on Tuesday night in Paris to avoid having to worry about qualifying for World Cup 2014 via the playoffs.
La Roja conceded in the last 15 minutes of their World Cup qualifier against Finland on Friday, which ensured the game finished 1-1 and allowed les Bleus to forge a two-point lead at the top of Group I.
Del Bosque will want to avoid a third successive draw in qualification for the World Cup 2014 finals and a victory at the Stade de France would allow his team to leapfrog Didier Deschamps' men.
The former Real Madrid boss told reporters on Sunday: "We will go to France to win. We have to play four more games [and] we must be optimistic.
"Tuesday is a very important match against France, but after that we will play three more games. We'll see how it goes."
It would be a major shock if the reigning world and European champion failed to qualify for the finals in Brazil next summer, though if the team finishes second behind France in Group I then it could still make it into the 32-team tournament via a playoff win.
Spain drew 1-1 with France in October pf last year at home, failing to replicate the team's 2-0 victory in the Euro 2012 quarterfinals against its neighboring nation.