Luiz Felipe Scolari's side cruised to victory in the warm-up tournament 12 months ago, winning all of their games, including an impressive 3-0 thrashing of Spain in the final.
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"The World Cup is a different tournament, in fact, [it is] the biggest of the tournaments," he told the Times of India.
"In football, past results don't count. So, we are trying to forget what happened a year ago [in the Confederations Cup]... and concentrate on the job at hand.
"Yes, it was great to be champions of the Confederations Cup. It would just be great to repeat that success.
"There's tremendous excitement. Playing in the World Cup is a dream for every footballer and it is a great moment for me. It cannot get bigger than that!"
The former Chelsea man is also full of respect for Croatia and has told his team-mates not to take anything for granted in their opening game of the tournament.
"They have a strong team. There are no easy matches. Football is not predictable. If it were so, the charm would have gone from this beautiful game.
"Croatia have some wonderful footballers and they will be eager, just like us, to show the world what they are capable of. We will be alert and confident to start the World Cup in the best possible manner."