The Brazilian scored in Spurs' 2-1 win at Sunderland, their second successive victory and a result that has eased a pressure on manager Andre Villas-Boas that had mounted after the club's 6-0 defeat to Manchester City.
They now find themselves sixth in the Premier League table, two points behind City and three behind the second-placed Reds, who head to north London next weekend.
Paulinho said: "It's a big game at home and we must think that if we play the same as we did against United, we have a big chance to win at home against Liverpool."
Villas-Boas' target is to bring Champions League football back to Tottenham by ensuring the club finish in the top four of the Premier League this season.
Asked if he may have to re-assess his targets given that Spurs have closed the gap on Liverpool, he replied: "It's still very compact at the moment.
"Arsenal have gone a distance. Obviously Arsenal have three important fixtures in the next games with Chelsea, Manchester City and Everton, but we just want to be near them and get ourselves into the Champions League positions.
"At the moment, we are fighting our way back, but we want to be there at the end of the season."