The Three Lions have just one more friendly left before heading to Russia, where they will get their Group G campaign underway against Tunisia in Volgograd on June 18.
England have had little joy at tournament level in recent years, with their last knockout stage victory at either World Cup or European Championship level coming in 2006.
However, the Manchester City player is confident that a better team atmosphere in the Three Lions camp could lead to a much-improved display by the nation.
"I fully believe in the players that we have in the squad. The manager has brought some brilliant ideas and we've all bought into it," the 28-year-old told BBC Sport. "I've seen players come and go and it was a different atmosphere before.
"Now that we all click, I feel quite comfortable sitting with anyone and talking to them, whether it's football or absolutely anything. That's the environment that we need to take into the World Cup because the quality in the team is going to show for itself but also the togetherness is going to pull us through."
England beat Nigeria 2-1 at the weekend and are now preparing to face Costa Rica in their final pre-World Cup friendly on Thursday.