The British fighter will aim to reclaim the world titles when he takes on the Ukrainian in Saudi Arabia later this month and Hearn says Joshua will deploy tactics that he has been working on with new coach Robert Garcia.
The promoter told The Independent: “I think [Joshua] is confident about the gameplan, he’s confident about what he’s got to do, and I think he’s in a great place.
"He knows the mistakes he’s made in the past, and he knows that he’s got to rectify them, but he’s very confident. I think he likes the addition of Robert Garcia, and we’re all confident for the fight."
Hearn is confident that Joshua will win and will have the opportunity to unify the heavyweight division in a blockbuster bout with Tyson Fury - despite the Gypsy King's repeated claims that he is retiring from boxing.
He said: “If you lose, you lose to a pound-for-pound No 1, and then you regroup and you go again. But obviously you want to win, and if he wins, I believe the Tyson Fury fight will happen; if he doesn’t, he goes back to being a contender again."
Hearn also confirmed that Joshua would be back in the ring by the end of 2022 regardless of the result against Usyk as the former world champion wants to be more active.
He said: "The one thing he [Joshua] wants more than anything is activity and December will definitely be his next fight."