Kane, 23, had a breakthrough season with Spurs in 2014/15 when scoring 31 goals in all competitions before beginning last campaign slowly.
The critics quickly emerged about Kane being a one-hit wonder but the England international put them back in their place by producing a 28-goal season at club level - including the Premier League Golden Boot - while chipping in with some important goals for his country.
Kane said: "What happened last season has given me confidence.
"Unfortunately there was a lot of talk last year and I managed to prove a lot of people wrong so people will talk this year as well.
"It's part of football. I am confident in my ability. I know that if I continue doing what I am doing the goals will come that is all I can do.
"I didn't score in my first seven or eight games last season and then to go on and win the Golden Boot proves that it was just a matter of time.
"People might talk now or if I don't score in the next five or six games, it doesn't bother me.
"I am a confident player. I know if I keep doing what I am doing I will score goals and that is what I am going to do."