The 21-year-old scored his 10th goal of the season during the 2-0 win over Newcastle on Tuesday, as Spurs climbed to fourth in the Premier League table.
“There’s no reason why we can’t push for the title,” the Welshman said.
“I think as we’ve seen, with 10 men (against Newcastle) we’re fully confident. We attack teams all the time and we’re up in the mix.
“Everyone fights for each other on the pitch. We are all close and get on with each other. That shows on the pitch and that’s why we’re getting results.”
He added: “It’s nice to get 10 goals in the first half of the season.
“I didn’t have a target at the start of the season but I just want to keep going and keep plugging away and hopefully I can get a few more before the end of the year.
“2010 has been a great year for me but I just want to keep working hard, keep battling and put in good performances for the team.
“If I can keep helping the team then that’s the best thing that can happen.”