Giovanni Trapattoni’s men lost all three of their group games in Poland and Ukraine as Ireland made their first appearance at a major tournament in a decade.
Ireland take on Serbia in a friendly on Wednesday night, and Sunderland defender O’Shea admits the Men in Green must work to restore their confidence and belief as soon as possible.
“Obviously you hope you take some sort of positive from it [Euro 2012], but you want the next qualifying campaign to come around as soon as possible, so you can get the new belief going again,” said O’Shea.
“The manager speaks about the confidence and the energy that we need to qualify from a tough World Cup qualifying campaign. Hopefully we can use that experience to drive us on to qualify for Brazil.”
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