The Cottagers have mustered just seven points from seven games this season as they prepare to face Crystal Palace on Monday.
But Dutchman Jol is confident that the club will reap the rewards from a number of his stars, who will be desperate for first-team action as they aim to make their respective World Cup squads.
"It is a big inspiration and I always try to use it," Jol said in the Daily Star. "But I try not to overdo it, because it could be a very big problem if everyone wants to go to the World Cup.
"For example, Brede Hangeland has got no problem with Norway as they have not qualified. But Philippe Senderos, who plays for Switzerland, wants to have his games, he wants to play.
"For some players, if they don't play they have got a problem, because all those national teams and their coaches want their players to play.
"With Holland coach Louis van Gaal, if you don't play he won't select you, so of course I use it as a motivation.
"I've got Alex Kacaniklic, he's in the Sweden team and did well and Pajtim Kasami has made his debut for Switzerland now, so of course they want to go to Brazil.
"But first they have to perform and do well."