Eduardo is aiming to help overcome disappointment with Croatia by helping Arsenal to Premier League and UEFA Champions League glory.
Although Croatia qualified for Euro 2008 in style Slaven Bilic's side narrowly failed to qualify for next summer's World Cup in South Africa.
The Gunners have gone four years without winning a trophy since the 2005 FA Cup final and Eduardo believes it could finally be their year.
Arsenal have made a blistering start to the new campaign and are now just five points adrift of leaders Chelsea with a game in hand.
Eduardo says Wenger's squad are full of confidence and quietly believe they can surprise a few teams this year by winning overdue silverware.
"At the moment we are improving a lot and feel stronger mentally - the atmosphere inside the squad is good, we are very together," Eduardo said.
"We are doing very well at the moment and I hope we can produce a big surprise this year.
"I am feeling good. At the beginning of the season I had a few injury niggles, but I am okay now and ready to help the team rise to the top of the table, as well as progressing in the Champions League."
Eduardo concedes Croatia were not at their best throughout their qualifying campaign and that it is a massive disappointment by failing to reach South Africa.
"There were a few games in which we didn't play well," he said. "We have caused surprises in a lot of major tournaments in recent years, so this was very disappointing for us.
"There are a lot of good players in our team and maybe we could have done something in South Africa, but it is difficult for a country like Croatia to go to every single World Cup - we are not like Brazil, who never fail to qualify.
"We will learn from what has happened and put our efforts into preparing for the Euro 2012 qualifiers."