The England international won over the Spurs supporters last season after some blinding midfield displays but has seen that form peter out this term as the north London club struggle to keep pace with the Premier League’s top four.
However, Alli is not letting any criticism distract him as he looks to push on in t he season, and his career.
"Every player has ups and downs; it's impossible to stay at one level throughout your career,” he told Sky Sports.
“I think I'm playing well. Of course there have been games where I haven't played as well as I would have liked but overall, I don't think there's too much to worry about. I'll keep working hard. I don't want to be as good as I was last year, I want to be better.
"It's important to stay confident; it's easy for your confidence to drop when you're not scoring goals, especially as an attacking player. People think if you're not scoring or assisting, you're playing badly but that's not always the case.
"There've been times when I've scored two goals in a game and probably had one of my worst games! It's frustrating when you're missing but you have to keep working hard and getting in positions. I know the quality I have so it's about showing it.”