Spurs remain in the battle for a UEFA Champions League place but have lost their last two league matches to slip into fourth place, with Chelsea a point ahead and Arsenal four behind - both with a game in hand.
Andre Villas-Boas' men travel to Swansea on Saturday under pressure to get back to winning ways as they look to return to Europe's top club competition.
France international Lloris says Spurs are feeling re-energised after the international break and will treat the Swans game, and every other until the end of the season, like a decider.
He told the Daily Mail: "Maybe the fight is between Chelsea and Arsenal and Tottenham. We can do it and I hope we will.
"I have big confidence because we have good character. We've proved it this season and now we have to show it on the pitch.
"We did very well for 12 games and we lost against Liverpool and Fulham, but the most important thing is the reaction.
"I think the international break was a good thing for us, to help us find energy for the end of the season. We now have eight games which are like eight finals."
Lloris says Tottenham's players have the ambition to finish inside the club's top four every year but admits Villas-Boas' men need more experience at Champions League level.
"I think Tottenham have the quality today to challenge other teams but we need time because we don't have experience,' he added.
"In a few seasons we can close that deficit but we need time and we need to play high-level games in the Champions League.
"We have ambition to put this club in the top four every year."
Lloris has established himself as Villas-Boas' first-choice keeper after a difficult start to life in North London when he found himself playing second fiddle to veteran shot-stopper Brad Friedel after joining Spurs from Lyon last summer.
The 26-year-old Frenchman added of that period: "You can't anticipate all the situations in football but you have to adapt.
"With time, things happen naturally - with work and with performance. Now it's in the past. Simple.
"When you arrive in England you have to prove who you are. That's not a problem - it's a good thing because it's very important to win people's respect."